Sell Apple Watch Series 9 in the UK: How Much Is It Worth in 2026?

Sell Apple Watch Series 9 in the UK: How Much Is It Worth in 2026?

Want to sell your Apple Watch Series 9 in the UK? Sell My iPhone is currently particularly interested in buying Apple Watch Series 9 smartwatches, including the 41mm and 45mm models in aluminium and stainless steel. If you've upgraded to a newer Apple Watch or simply stopped wearing yours, it's worth checking whether we can make you an offer.

Introduced in September 2023, Apple Watch Series 9 is now just over three years old. But that doesn't mean it has reached the end of its useful life.

In fact, there's an important reason Series 9 remains attractive in the second-hand market: it's the oldest standard Apple Watch generation compatible with watchOS 27, Apple's current operating system.

That gives it an advantage over the older Series 8 when buyers are comparing used Watches.

So how much could your Series 9 be worth? Does the larger 45mm model sell for more? What about the stainless steel versions? And can you sell a Watch with scratches or reduced battery health?

This guide explains what affects Apple Watch Series 9 resale value, how to identify your exact model and how to sell it through Sell My iPhone.

Sell your Apple Watch Series 9 — check your trade-in options

Quick answer: You can sell an Apple Watch Series 9 in the UK through Sell My iPhone. The Watch comes in 41mm and 45mm sizes, with GPS and GPS + Cellular configurations. Its resale value depends on the case material, screen condition, battery health and current market demand. Search for your exact model and follow the listing's price or custom-quote process to find out whether an offer is available.

How much is an Apple Watch Series 9 worth in 2026?

There is no fixed resale value that applies to every Series 9.

A 45mm stainless steel GPS + Cellular model may be assessed differently from a 41mm aluminium GPS version.

Likewise, two identical Watches can have different values if one has significant display scratches, a deteriorating battery or damaged buttons.

The main factors affecting the offer are:

Because all of these factors matter, it's better to check a current offer than rely on a price somebody received months ago.

Sell My iPhone is particularly interested in acquiring Series 9 devices.

Check whether we can make you an offer for your Series 9

Where can I sell my Apple Watch Series 9 in the UK?

There are several ways to sell a used Apple Watch, but they involve different amounts of work.

Sell to a specialist trade-in company

A specialist buyer provides a direct way to check whether your Watch can be purchased.

Sell My iPhone buys smartwatches as well as smartphones and tablets.

You can search for your exact Series 9, select the relevant options and follow the instructions on its listing.

Some products display an advertised trade-in price. Selected products instead use a custom quote request.

Where a custom quote is required, the team reviews your device details and determines whether it can make an offer based on the current market.

Sell privately

A private marketplace gives you control over your asking price.

However, you'll usually need to:

Photograph the Watch.

Create a listing.

Answer questions.

Negotiate with buyers.

Arrange payment.

Package and post the device.

Deal with any disputes.

A private sale may achieve a different price, but there is no guarantee that an advertised asking price will result in a completed sale.

Manufacturer trade-in

Manufacturer trade-in programmes can be convenient if you're buying another device.

However, some offers are linked to a purchase or provided as store credit.

If you've already upgraded and simply want to sell your old Watch, a specialist trade-in service is another option worth comparing.

Can I sell my Apple Watch Series 9 41mm?

Yes. Apple Watch Series 9 41mm is one of the configurations Sell My iPhone is currently interested in acquiring.

The 41mm version is the smaller of the two Series 9 sizes.

It was available in several configurations, including:

41mm aluminium GPS

41mm aluminium GPS + Cellular

41mm stainless steel GPS + Cellular

The smaller case can appeal to people who prefer a compact, lighter smartwatch.

Is a 41mm Series 9 still worth selling?

Potentially.

It offers the same generation of processor and many of the same capabilities as the larger Series 9.

These include the Always-On Retina display, health and fitness tracking, Apple Pay and support for watchOS 27.

A fully working 41mm Series 9 can therefore remain useful even if its original owner has upgraded.

Does the smaller size mean a lower resale price?

Not necessarily.

A larger case may command a different price, but condition, material and connectivity can be equally important.

For example, a 41mm stainless steel model in excellent condition may receive a different assessment from a damaged 45mm aluminium Watch.

Always identify the exact version before requesting an offer.

Search Apple Watch Series 9 41mm

Can I sell my Apple Watch Series 9 45mm?

Yes. Sell My iPhone is also particularly interested in the 45mm Series 9.

The 45mm version offers a larger display and was available in aluminium and stainless steel.

The main configurations include:

45mm aluminium GPS

45mm aluminium GPS + Cellular

45mm stainless steel GPS + Cellular

Is Series 9 45mm worth more than 41mm?

It can be, but there's no permanent rule.

Some buyers prefer the larger screen, while others want the smaller case.

The current market determines how those preferences translate into resale value.

A 45mm Watch with a cracked display will not necessarily be worth more than a well-maintained 41mm model.

What should I check before selling?

Inspect:

Display and touchscreen

Digital Crown

Side button

Speaker and microphone

Charging

Battery health

Casing

Connectivity

Describe the condition honestly when selecting your trade-in options.

Search Apple Watch Series 9 45mm

Does GPS or Cellular affect Apple Watch Series 9 trade-in value?

Yes, it can.

Apple Watch Series 9 was sold in both GPS and GPS + Cellular configurations.

The difference matters because Cellular models have additional mobile connectivity capabilities.

Apple Watch Series 9 GPS

The GPS model uses its connection to a paired iPhone or supported Wi-Fi network for many connected functions.

For people who usually carry their iPhone, this may be sufficient.

Apple Watch Series 9 GPS + Cellular

The Cellular model can connect to a compatible mobile network through a supported plan.

That allows certain features to work without the paired iPhone nearby.

Some buyers specifically want this functionality.

Others are happy with GPS.

Does Cellular always sell for more?

Not automatically.

Although Cellular models cost more than comparable GPS versions when new, the second-hand price difference depends on demand and condition.

Choose the correct connectivity version when submitting your Watch.

Can I sell a stainless steel Apple Watch Series 9?

Yes.

Stainless steel Series 9 models are another important configuration.

Apple released them in:

Silver

Gold

Graphite

There were also Apple Watch Hermès variants.

The stainless steel versions have sapphire crystal displays, while aluminium Series 9 models use Ion-X front glass.

These are genuine product differences that can matter when identifying and valuing a Watch.

Is stainless steel worth more than aluminium?

It may be.

Stainless steel is a premium case material, and those versions had higher original retail prices.

However, an older premium Watch does not automatically receive a higher offer than every aluminium model.

Screen condition, battery performance and demand still matter.

What if I have an Apple Watch Hermès Series 9?

Identify it accurately.

A Hermès model should not simply be submitted as an ordinary aluminium Series 9 because the generation is the same.

Check whether the exact variant appears in the catalogue.

If it doesn't, contact Sell My iPhone to ask whether the team can consider it.

How do I know whether I have an Apple Watch Series 9?

It's worth checking before selling.

Apple Watch Series 7, Series 8 and Series 9 can look very similar.

All were available in 41mm and 45mm sizes.

Do not rely on appearance alone.

Find your Apple Watch model number

On the iPhone paired with your Watch:

Open the Watch app.

Select My Watch.

Tap General.

Open About.

Find Model Number.

Tap the field to reveal the identifier beginning with A.

Apple lists these identifiers for Series 9:

Other regional Cellular model numbers exist.

The Cellular identifiers are shared across aluminium and stainless steel configurations, so check the material separately.

Identify your Apple Watch using Apple's official guide

How much storage does Apple Watch Series 9 have?

Apple Watch Series 9 has 64GB of storage.

It was not sold in separate 32GB and 128GB versions.

For resale, the more important configuration details are case size, material and connectivity.

Why is Apple Watch Series 9 still worth selling in 2026?

One of the strongest reasons is its continued software support.

Apple Watch Series 9 is the oldest standard Apple Watch generation supported by watchOS 27.

Apple's current compatibility list includes:

Apple Watch Series 9

Apple Watch Series 10

Apple Watch Series 11

Apple Watch Series 12

Apple Watch SE 3

Apple Watch Ultra 2 and later

Series 8 and earlier standard Series models are not included.

This distinction can matter when buyers compare refurbished Apple Watches.

Does watchOS 27 work on Apple Watch Series 9?

Yes.

Apple officially includes Series 9 in its watchOS 27 compatibility list.

A compatible iPhone running the required iOS version is also needed.

Not every watchOS 27 feature is necessarily available on Series 9, but the model remains supported by Apple's current major Watch operating system.

Check Apple's official watchOS 27 compatibility

Why does this matter for resale?

Some people want a used Apple Watch that can still run current software.

Others want to avoid paying for the newest generation.

Series 9 offers a combination of relatively modern hardware and current major operating-system compatibility.

That can help preserve its appeal among refurbished smartwatch buyers.

It doesn't guarantee a particular resale price, but it gives Series 9 a meaningful point of difference from some older models.

Apple Watch Series 9 vs Series 8: Does software support affect value?

Series 8 and Series 9 share several design characteristics.

Both have:

41mm and 45mm sizes

Always-On Retina displays

GPS and Cellular options

Health and fitness tracking

Aluminium and stainless steel variants

However, Series 9 introduced the S9 chip and expanded storage to 64GB, compared with 32GB on Series 8.

It also introduced features including the double tap gesture and on-device Siri processing.

The software position is another distinction.

Does that mean Series 9 is always worth more?

Not necessarily.

A damaged Series 9 can still be less attractive than a well-maintained older device.

But for someone considering which used Apple Watch to purchase, support for Apple's current major operating system is a relevant factor.

That is one reason a functioning Series 9 remains worth checking before recycling or storing it indefinitely.

Should I sell my Apple Watch Series 9 after upgrading?

If you've moved to a newer Watch and no longer use Series 9, checking its resale value is sensible.

Perhaps you've upgraded to:

Apple Watch Series 10

Apple Watch Series 11

Apple Watch Series 12

Apple Watch Ultra

Or maybe you've stopped using a smartwatch altogether.

In each case, your old Series 9 may now be sitting unused.

Is it worth keeping as a backup?

Sometimes.

A backup Watch can be useful if you regularly switch devices.

However, consider whether you genuinely need one.

If you haven't worn your Series 9 since upgrading, keeping it indefinitely may not offer much practical value.

Meanwhile, used technology can depreciate as newer models arrive and batteries age.

When should I sell?

There is no guaranteed best date.

However, once you've decided you don't need the Watch, checking its current trade-in value makes sense.

You can then decide whether an offer is worthwhile.

Does Apple Watch Series 9 battery health affect resale value?

Yes.

Battery health is an important consideration when selling a used smartwatch.

Rechargeable batteries gradually lose capacity through use and ageing.

That means a Series 9 bought in 2023 may now have noticeably different battery performance from when it was new.

However, battery condition varies between devices.

How to check Series 9 battery health

On your Watch, open:

Settings → Battery → Battery Health

Check the Maximum Capacity percentage.

This provides an estimate of the battery's remaining capacity compared with its original condition.

You should also consider normal use.

Does the Watch:

Charge reliably?

Last through your usual day?

Shut down unexpectedly?

Lose power unusually quickly?

Display a battery service warning?

Does low battery health reduce the offer?

It can.

Sell My iPhone's general grading guidance explains that degraded batteries may require a revised valuation.

The exact assessment depends on the device and applicable buying conditions.

Do not assume that every Watch below a particular battery percentage is automatically rejected.

Instead, accurately describe the device and check its current selling options.

Should I replace the battery before selling?

Not automatically.

A battery replacement costs money.

Before paying for a repair purely to sell, compare the cost with the additional value it might create.

If the repair costs more than the increase in resale value, you would be financially worse off.

Checking whether the Watch can be considered in its present condition is often a better first step.

Can I sell an Apple Watch Series 9 with scratches?

Potentially.

Cosmetic wear is common on used smartwatches.

A Watch is worn on the wrist, so contact with desks, walls and other objects can leave marks.

The severity of those marks matters.

Light scratches on the case

A few small cosmetic marks may be assessed differently from deep dents or impact damage.

Inspect the edges, Digital Crown and button areas.

Scratches on the display

Look at the screen both switched on and off.

Some scratches are much easier to see when the display is dark.

Sell My iPhone's FAQ says its inspection process checks screens in both conditions to identify surface marks.

Does sapphire crystal prevent scratches?

No material is completely immune to damage.

Stainless steel Series 9 models use sapphire crystal, while aluminium models use Ion-X glass.

Both can still suffer damage.

Describe the actual condition rather than assuming the display material determines the grade.

Can I sell a Series 9 with a cracked screen?

You can enquire, but acceptance depends on the damage.

A cracked screen can affect:

Display visibility

Touchscreen functionality

Repair costs

Water resistance

Overall usability

A Watch that still powers on is not necessarily fully functional.

If yours has a cracked display, describe the damage accurately.

Do not automatically spend money replacing the screen before checking whether a buyer can consider it as it is.

What should I test before selling Apple Watch Series 9?

A few basic checks can help prevent an inaccurate condition submission.

Display

Make sure the screen turns on and responds to touch.

Check for cracks, display lines, dead pixels and abnormal marks.

Digital Crown

Rotate and press the Crown.

Confirm that it responds normally.

Side button

Test the button.

It should not be stuck or unresponsive.

Charging

Connect the Watch to a compatible charger and check that it charges reliably.

Battery

Review Battery Health and note any unexpected shutdowns.

Speaker and microphone

Test audio using a suitable feature.

Connectivity

Check Bluetooth, Wi-Fi and Cellular functionality where applicable.

Health sensors

If you are aware of a fault affecting heart-rate tracking or another sensor, disclose it.

You don't need specialist testing equipment to carry out a basic inspection.

The important thing is to be honest about what works and what doesn't.

How do I remove Activation Lock before selling Series 9?

You must remove Activation Lock before selling your Apple Watch Series 9.

Activation Lock is Apple's security feature designed to prevent unauthorised use.

If the Watch remains linked to your Apple Account, the next owner may not be able to activate it.

How to unpair Apple Watch Series 9

Keep your Watch and paired iPhone close together.

Then:

Open the Watch app on your iPhone.

Select My Watch.

Tap All Watches.

Tap the information button beside your Series 9.

Select Unpair Apple Watch.

Confirm the unpairing.

Remove the mobile-data plan if you are selling a Cellular version.

Enter your Apple Account password when prompted.

Complete the process.

When completed correctly, unpairing through the paired iPhone erases the Watch and removes Activation Lock.

Is a factory reset enough?

Not necessarily.

Apple explains that erasing an Apple Watch directly can leave Activation Lock enabled.

The Watch may appear reset while remaining linked to your account.

This can prevent the next owner from setting it up.

Use Apple's recommended unpairing process wherever possible.

Read Sell My iPhone's guide to unpairing an Apple Watch

You can also follow Apple's official instructions.

What if I no longer have the iPhone paired to my Watch?

You may still be able to remove the Watch from your Apple Account.

Apple provides instructions for erasing and removing devices through its account and Find Devices services.

Follow the official process carefully.

Do not send a Watch that remains Activation Locked.

A buyer needs to be able to activate it with their own account.

Do I need to cancel my Series 9 Cellular plan?

If you have a GPS + Cellular model, check whether you still have an active mobile-data subscription.

When unpairing the Watch for sale, choose the option to remove the mobile plan.

You may also need to contact your network provider to cancel the subscription.

Removing a plan from the Watch does not necessarily cancel the billing arrangement.

This is worth checking before you sell.

Do I need the original Series 9 box, charger and strap?

Sell My iPhone's preparation instructions say smartwatches should include their charger and strap.

That's an important distinction because some ordinary smartphone trade-ins do not require the original charger.

Charging cable

Find the compatible Apple Watch charging cable.

If it's missing, contact Sell My iPhone before dispatch.

Strap

Include the required strap and follow the instructions for your particular sale.

Original retail box

A missing box does not automatically prevent an ordinary used Watch from being considered.

However, a Watch submitted as brand-new and factory-sealed has different requirements.

Do not describe an opened Watch as sealed.

Read Sell My iPhone's device preparation guide

How do I sell my Apple Watch Series 9 to Sell My iPhone?

Sell My iPhone is particularly interested in buying Series 9 smartwatches.

The process starts with finding your exact model.

Step 1: Search for Series 9

Visit Sell My iPhone's device catalogue.

Search for:

Apple Watch Series 9

Step 2: Choose the correct version

Identify:

41mm or 45mm

GPS or GPS + Cellular

Aluminium or stainless steel

Do not submit a different generation or configuration because it looks similar.

Step 3: Select the condition

Describe scratches, battery performance and any functional faults accurately.

Step 4: Follow the listing's offer process

Some Sell My iPhone listings show an advertised trade-in price.

Selected products instead use a custom quote request.

If your Series 9 listing asks you to request a quote, complete the information and follow the Submit and Check Out instructions.

Step 5: The team reviews your request where required

For custom quotes, the details are sent to the Sell My iPhone team.

The team can review the Watch, its condition and the current market before deciding whether an offer is possible.

Submitting a custom quote request does not guarantee a price or mean the sale is complete.

Step 6: Proceed if you accept an offer

Follow the instructions supplied for completing the sale.

Do not post the Watch simply because you've submitted an enquiry.

Wait for the applicable offer confirmation and dispatch instructions.

Search your Series 9 and check your offer options

What happens after Sell My iPhone receives my Watch?

Once a sale has been agreed and the Watch arrives, Sell My iPhone inspects it to confirm that it matches the description.

The assessment can include:

Model identification

Screen condition

Case wear

Battery performance

Controls and charging

Functionality

Activation Lock status

If the condition differs from what was submitted, a revised offer may be necessary.

Sell My iPhone's published FAQs explain that sellers can accept a revised price or request the device's return.

This is one reason accurate grading matters.

How long is an agreed quote valid?

Sell My iPhone's published terms generally provide a 14-day price guarantee for qualifying quoted devices received within the specified period and matching the agreed condition.

This applies after a price has actually been quoted.

It does not mean every custom quote request automatically receives an offer.

How should I package Apple Watch Series 9 for posting?

Once you've accepted an offer and received the dispatch instructions, package your Watch carefully.

Photograph the device

Take clear photographs showing:

Front display

Case

Digital Crown

Side button

Rear sensors

Existing scratches or damage

These provide a record of the Watch's condition before posting.

Protect the display

Use suitable padding.

Avoid placing hard accessories directly against the screen.

Make sure the Watch cannot move freely inside the package.

Include the required accessories

Follow the smartwatch instructions regarding the charger and strap.

Keep proof of postage

Retain the receipt and tracking information.

For valuable devices, check whether the delivery service offers appropriate compensation.

Follow Sell My iPhone's dispatch instructions for your agreed sale.

Should I sell Apple Watch Series 9 or keep it?

That depends on whether you still use it.

Keep it if it meets your needs

Series 9 remains compatible with watchOS 27.

If it still does everything you want, there's no need to replace it simply because newer Apple Watches exist.

Sell it if you've already upgraded

If your Series 9 has become redundant, checking its resale value makes sense.

The device may still have practical value for another owner.

Compare before deciding

You can check whether Sell My iPhone can make an offer and decide whether the amount is worthwhile.

A quote enquiry does not mean you must accept any proposed price.

Why does Sell My iPhone want Apple Watch Series 9 devices?

Apple Watch Series 9 occupies an interesting position in the refurbished market.

It is older than the latest Series models, but it still supports Apple's current major Watch operating system.

That could appeal to somebody who wants:

A relatively modern Apple Watch

Current major software compatibility

A 41mm or 45mm case

GPS or Cellular connectivity

A stainless steel finish

Health and fitness features

A lower purchase cost than a brand-new flagship

Those are useful reasons for a second-hand buyer to consider Series 9.

And they're reasons why an owner who has already upgraded may still be able to recover some value from it.

Ready to sell your Apple Watch Series 9?

Sell My iPhone is currently particularly interested in acquiring:

Apple Watch Series 9 41mm GPS

Apple Watch Series 9 45mm GPS

Apple Watch Series 9 41mm GPS + Cellular

Apple Watch Series 9 45mm GPS + Cellular

Apple Watch Series 9 stainless steel variants

If you've upgraded or no longer wear yours, check whether we can make you an offer.

Before submitting:

Confirm the Watch is Series 9.

Check the case size.

Identify GPS or Cellular.

Confirm aluminium or stainless steel.

Inspect the screen and casing.

Review battery health.

Describe any faults accurately.

Search the device on Sell My iPhone.

If the listing uses custom quotes, submit the requested information so the team can review whether an offer is possible.

If you accept an offer, properly unpair the Watch and remove Activation Lock before dispatch.

Apple Watch Series 9 remains supported by watchOS 27 and could still have resale value in 2026. Rather than leaving it unused, find out whether Sell My iPhone wants to buy it.

Sell your Apple Watch Series 9 — check your offer options

Frequently asked questions

Can I sell my Apple Watch Series 9 in the UK?

Yes. Sell My iPhone is particularly interested in acquiring Series 9 smartwatches. Search for your exact model and follow the listing's instructions.

How much is Apple Watch Series 9 worth in 2026?

Its value depends on case size, material, connectivity, screen condition, battery health and current demand. Check the available trade-in price or request a custom quote where applicable.

Where can I sell Apple Watch Series 9?

You can use a specialist trade-in service such as Sell My iPhone, sell privately or compare manufacturer trade-in programmes.

Can I sell Apple Watch Series 9 41mm?

Yes. Sell My iPhone is interested in 41mm Series 9 models, including relevant GPS and Cellular configurations.

Can I sell Apple Watch Series 9 45mm?

Yes. The larger 45mm Series 9 is another priority configuration.

Is Apple Watch Series 9 45mm worth more than 41mm?

It may be, but condition, material and connectivity also affect the offer. A larger case does not guarantee a higher price.

Can I sell a stainless steel Series 9?

Yes. Stainless steel Series 9 models are worth checking. Identify the exact version before submitting.

Is Apple Watch Series 9 aluminium or titanium?

Standard Series 9 models were sold in aluminium and stainless steel. Titanium was used for the Ultra range rather than standard Series 9.

What storage does Apple Watch Series 9 have?

Apple Watch Series 9 has 64GB of internal storage.

Does Series 9 support watchOS 27?

Yes. Apple includes Series 9 in its current watchOS 27 compatibility list.

Does Apple Watch Series 8 support watchOS 27?

No. Apple's official watchOS 27 compatibility list begins at Series 9 for the standard Series range.

What are the Apple Watch Series 9 model numbers?

A2978 identifies the 41mm GPS version and A2980 the 45mm GPS version. A2982 and A2984 identify the corresponding Cellular versions for Europe and other supported regions.

Does battery health affect Series 9 trade-in value?

It can. Battery condition is part of the overall assessment and may influence an offer.

Can I sell a scratched Apple Watch Series 9?

Potentially. Describe the cosmetic condition accurately.

Can I sell Series 9 with a cracked screen?

You can enquire, but acceptance depends on the damage and whether repair or reuse is commercially viable.

Do I need to remove Activation Lock?

Yes. Properly unpair the Watch from your Apple Account before transferring it to another owner.

Is factory-resetting my Watch enough?

Not necessarily. Erasing the Watch directly may leave Activation Lock enabled. Apple recommends unpairing through the paired iPhone.

Do I need the original charger and strap?

Sell My iPhone's published preparation instructions say smartwatches should include the charger and strap.

Can I sell Series 9 without its original box?

Potentially. Original packaging requirements depend on the device's condition and the agreed sale terms.

Why can't I see an instant price?

Selected Sell My iPhone products use custom quote requests. Enter the requested information so the team can assess whether an offer is possible.

Does submitting a custom quote guarantee an offer?

No. Submitting a quote request allows the team to review the device. A purchase offer is not guaranteed.

How do I get an offer for Apple Watch Series 9?

Search the exact Series 9 model, select the requested specifications and condition, then follow the price or custom-quote process shown.

Check whether Sell My iPhone can buy your Series 9

Sources and further reading

Sell My iPhone — Search for Your Device

Sell My iPhone — Frequently Asked Questions

Sell My iPhone — Preparing Your Device for Sale

Sell My iPhone — How Much Is My Apple Watch Worth in 2026?

Sell My iPhone — How to Unpair Your Apple Watch

Sell My iPhone — Apple Watch Series 12 and watchOS 27 Upgrade Guide

Apple — Apple Watch Series 9 Technical Specifications

Apple — Identify Your Apple Watch

Apple — watchOS 27 Compatibility

Apple — Unpair and Erase Your Apple Watch