How to Identify Your Apple Watch Model, Size, Serial Number, Warranty, and AppleCare

The fastest and most reliable way to identify an Apple Watch is to open its About screen. On a paired iPhone, go to Apple Watch app > My Watch > General > About. On the watch itself, use Settings > General > About.

There you can find the model name, hardware model number, serial number, and—on GPS + Cellular models—the IMEI. Use the five-digit model number beginning with A to match the watch with Apple’s official identification list. Then use the serial number at Apple’s coverage checker to check warranty and AppleCare status.

#	Preview	Product	Price
1		Apple Watch Series 11 [GPS 46mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band -...	$360.05	Buy on Amazon
2		Apple Watch Series 11 [GPS 42mm] Smartwatch with Rose Gold Aluminum Case with Light Blush Sport Band...	$331.55	Buy on Amazon
3		Apple Watch SE 3 [GPS 40mm] Smartwatch with Starlight Aluminum Case with Starlight Sport Band - S/M....		Buy on Amazon
4		Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M....	$208.05	Buy on Amazon
5		Apple Watch Series 11 [GPS 42mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band -...	$331.55	Buy on Amazon

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What you can identify

Apple Watch identification involves several different numbers and descriptions. They are not interchangeable.

Apple also lists supporting information such as watchOS version, capacity, network, carrier, ICCID, and EID in the About section. These details can help confirm a configuration but do not replace the A-number when identifying the model.

#1 Best Overall

Apple Watch Series 11 [GPS 46mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant

• A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
• KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
• GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
• SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
• A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.

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Identify an Apple Watch with the paired iPhone

1. Open the Apple Watch app on the iPhone.
2. Tap My Watch.
3. Go to General > About.
4. Record the Model Name, Model Number, and Serial Number.
5. If the watch is cellular, record the IMEI as well.

The Model Number field may initially show a longer code beginning with M. That is the part number, not the A-number normally used in Apple’s hardware identification list. Tap the field once to switch it to the five-digit model number beginning with A.

Copy the A-number exactly, then search for it on Apple’s Identify your Apple Watch page. Confirm the generation, case size, connectivity, region, and any special-edition information listed there.

Identify the watch directly

If you have the watch but not its paired iPhone, use the watch’s own menus:

Settings > General > About

Depending on the watchOS version and model, this screen can show the model name, model number, serial number, software version, network, carrier, IMEI, and other cellular identifiers. Apple’s watchOS documentation describes the information available in About.

This is the preferred route when the watch is being inspected before a sale, when the rear engraving is difficult to read, or when several generations look similar.

Find the Apple Watch serial number

When the watch turns on

• On the watch: Settings > General > About > Serial Number.
• On the paired iPhone: Apple Watch app > My Watch > General > About > Serial Number.

When the watch is unavailable or damaged

Apple provides physical identification locations:

• For Apple Watch Series 1 and later, remove the band and inspect the band slot for the serial engraving.
• For the first-generation Apple Watch, inspect the engraving on the back of the case.

Other possible sources include the original box label, receipt, order email, Apple Account device records, and Apple Support or My Support. Apple may require account verification or proof of purchase, so these routes are possible fallbacks rather than guaranteed replacements for the About screen.

Rank #2

Apple Watch Series 11 [GPS 42mm] Smartwatch with Rose Gold Aluminum Case with Light Blush Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant

• A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
• KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
• GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
• SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
• A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.

$331.55

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Transcribe the serial number carefully. If the watch is being sold, avoid publishing a full serial number in a public listing unless there is a specific reason to do so. Mask it in screenshots and provide it privately to a legitimate buyer or service provider when necessary.

Find the IMEI

An IMEI appears only on GPS + Cellular Apple Watch models. Find it in either location:

• Watch: Settings > General > About.
• Paired iPhone: Apple Watch app > My Watch > General > About.

An IMEI confirms that the watch has cellular hardware, but it is not the same as the Apple Watch’s model number or serial number. A GPS-only watch will not have an IMEI.

Determine the case size

Apple Watch case size is measured by the height of the case in millimeters. It is separate from wrist size, display size, and band sizing.

Use these methods, in order of reliability:

1. Read the rear case engraving. The size may be engraved on the back.
2. Look up the A-number. Apple’s identification page associates model numbers with case sizes and configurations.
3. Check the box, receipt, order email, or Apple Account purchase record.
4. Use Apple’s product page as supporting evidence. Do not rely on a visual comparison alone.

Do not infer case size from the band. A band may fit multiple case-size families, and third-party bands can be mislabeled. For example, current U.S. Apple pages list the Apple Watch Series 11 in 42mm and 46mm sizes, the Apple Watch SE 3 in 40mm and 44mm sizes, and the Apple Watch Ultra 2 and Ultra 3 at 49mm. Older generations use other combinations, including 38/42mm, 40/44mm, and 41/45mm. Always check the specific generation rather than applying a current size chart to an older watch.

Tell GPS and GPS + Cellular models apart

The most dependable method is to check the About screen and then verify the A-number against Apple’s model list.

Rank #3

Apple Watch SE 3 [GPS 40mm] Smartwatch with Starlight Aluminum Case with Starlight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant

• GET SMARTER HEALTH INSIGHTS—Apple Watch SE 3 is an advanced health tracker that helps you better understand your body. The smartwatch sends alerts for an irregular heart rhythm, or an unusually high or low heart rate.* You can view your overnight health tracking metrics with the Vitals app,* track your sleep score, and get sleep apnea notifications.*
• A GREAT FITNESS TRACKER—SE 3 can track your workouts in a healthy number of ways—from running and strength training to simply achieving your 10K steps a day. With real-time metrics and Workout Buddy powered by Apple Intelligence from your nearby iPhone,* you’ll hit your goals like never before.
• KEEP HELP CLOSE AT HAND—SE 3 is a smartwatch that can detect a hard fall or severe car crash and automatically help connect you to emergency services and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
• WOMEN’S HEALTH INSIGHTS—SE 3 has advanced sensors that track your wrist temperature while you sleep. With this smartwatch, you can log your periods and symptoms, get period predictions, and get notified of cycle deviations.*
• GREAT BATTERY LIFE AND FASTER CHARGING—Enjoy a smartwatch with all-day, 18-hour battery life* from sunup to sundown. Then charge up to twice as fast as SE 2* and get up to 8 hours of battery in just 15 minutes.*

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Useful supporting clues include:

• An IMEI in About.
• Network, carrier, or cellular information in About.
• A cellular option in the original purchase record.
• A model number Apple identifies as GPS + Cellular.
• A red ring or other external marking on some older cellular models.

External markings are not universal across generations, regions, materials, and special editions. Do not identify connectivity from appearance alone. Cellular status matters for carrier activation, resale value, Family Setup eligibility, and whether an IMEI exists.

Match the A-number to Apple’s official model list

1. Copy the five-digit A-number from the About screen.
2. Open Apple’s Identify your Apple Watch page.
3. Use the page’s generation headings or your browser’s find function.
4. Search for the exact A-number.
5. Compare the listed generation, size, connectivity, region, material, finish, and collection.

One Apple Watch generation can have multiple A-numbers. Differences may reflect GPS versus GPS + Cellular hardware, North American versus Europe/Asia-Pacific versions, mainland China variants, or Nike and Hermès configurations. Apple also adds new generations to the page, so a third-party chart or old article may be incomplete.

As of the current Apple identification and U.S. shopping pages, Apple’s lineup includes Series 11, SE 3, Ultra 3, Series 10, Ultra 2, Series 9, and earlier generations. Availability and naming can differ by country, and the live Apple page should take precedence over an old chart.

Check the standard Apple Watch warranty

1. Open Apple’s coverage checker.
2. Enter the watch’s serial number, not its IMEI or A-number.
3. Complete the verification step.
4. Review the displayed coverage and support information.
5. Save the expiration date or take a screenshot for your records.

You can also sign in to My Support to view devices, coverage, and repair information. The result may show whether the Limited Warranty is active, whether an AppleCare plan is associated with the watch, and which service options are available.

In the United States, Apple’s Limited Warranty generally covers the watch and included Apple-branded accessories against manufacturing defects for one year from the purchase date. It generally does not cover accidental damage, normal battery depletion, or cosmetic damage that does not affect functionality. Unauthorized modifications or service can also affect coverage. The one-year description is a U.S. general term, not a universal worldwide rule; consumer-law rights and warranty periods vary by country or region. See Apple’s repair and service information for applicable terms.

If Apple’s purchase date is wrong, keep the original sales receipt and contact Apple Support to request a correction. Coverage information can depend on when the purchase was reported to Apple.

Rank #4

Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant

• GET SMARTER HEALTH INSIGHTS—Apple Watch SE 3 is an advanced health tracker that helps you better understand your body. The smartwatch sends alerts for an irregular heart rhythm, or an unusually high or low heart rate.* You can view your overnight health tracking metrics with the Vitals app,* track your sleep score, and get sleep apnea notifications.*
• A GREAT FITNESS TRACKER—SE 3 can track your workouts in a healthy number of ways—from running and strength training to simply achieving your 10K steps a day. With real-time metrics and Workout Buddy powered by Apple Intelligence from your nearby iPhone,* you’ll hit your goals like never before.
• KEEP HELP CLOSE AT HAND—SE 3 is a smartwatch that can detect a hard fall or severe car crash and automatically help connect you to emergency services and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
• WOMEN’S HEALTH INSIGHTS—SE 3 has advanced sensors that track your wrist temperature while you sleep. With this smartwatch, you can log your periods and symptoms, get period predictions, and get notified of cycle deviations.*
• GREAT BATTERY LIFE AND FASTER CHARGING—Enjoy a smartwatch with all-day, 18-hour battery life* from sunup to sundown. Then charge up to twice as fast as SE 2* and get up to 8 hours of battery in just 15 minutes.*

$208.05

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Check AppleCare and AppleCare+

AppleCare+ is separate from the standard Limited Warranty. A watch can have an expired Limited Warranty but active AppleCare+, or it can have neither.

Check for a plan through:

• Apple’s coverage checker using the serial number.
• Apple Support or My Support.
• Settings > General > AppleCare & Warranty, if that menu is available on the watchOS and device configuration.
• The original receipt, Apple email confirmation, or Apple Account purchase history.

AppleCare+ can add accidental-damage service, priority support, and Express Replacement Service. Theft-and-loss benefits apply only when the specific plan explicitly includes Theft and Loss; they are not included in every AppleCare product.

AppleCare+ with Theft and Loss

For an Apple Watch theft-or-loss claim, Apple says Find My must have been enabled when the watch was lost or stolen and must remain enabled during the claims process. Do not remove the watch from the associated Apple Account before the claim is approved. A serial number or other device information may be required. Follow Apple’s current theft-and-loss claim instructions.

Apple’s current U.S. pages describe AppleCare+ with Theft and Loss for Apple Watch as covering up to two theft-or-loss incidents every 12 months, subject to the plan terms. AppleCare One uses a separate shared claim structure described by Apple as up to three total theft-and-loss claims every 12 months for covered iPhone, iPad, and Apple Watch products.

U.S. price and fee examples

Apple’s U.S. pages retrieved in August 2026 listed AppleCare+ with Theft and Loss at $2.99 per month or $29.99 per year for Apple Watch SE 3, $4.99 per month or $49.99 per year for Series 11, and $5.99 per month or $59.99 per year for Apple Watch Ultra. AppleCare One was listed at $19.99 per month for up to three Apple products, with additional products listed at $5.99 per month each.

These are dated U.S. examples, not permanent worldwide prices. Apple can change pricing, eligibility, purchase windows, plan terms, taxes, and claim limits.

Best Value

Apple Watch Series 11 [GPS 42mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant

• A FULL-FEATURED HEALTH TRACKER—Apple Watch Series 11 gives you invaluable insights about your body, right from your wrist. Take an ECG anytime* and get alerts for a high and low heart rate or an irregular rhythm*—so you can stay closer to your heart. You can also view your overnight health tracking metrics with the Vitals app* and be notified of possible sleep apnea.*
• KNOW YOUR SLEEP SCORE—With advanced sleep tracking, Series 11 gives you a daily sleep score. It’s an easy way to help measure and understand the quality of your sleep, so you can make it more restorative.
• GET HYPERTENSION NOTIFICATIONS—Did you know that Series 11 can spot signs of chronic high blood pressure? By analyzing how your blood vessels respond to beats of the heart, it can notify you of possible hypertension.*
• SAFETY FEATURES—A smartwatch that puts your safety first. Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when you’ve arrived at your destination.
• A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence from your nearby iPhone*—Series 11 is made to help everyone stay active, from runners and hikers to strength-training enthusiasts.

$331.55

Buy on Amazon

The same U.S. disclosures listed accidental-damage service fees of $69 for Apple Watch models excluding Ultra and Hermès, and $79 for Ultra and Hermès. The theft-or-loss deductible was listed as $119. Fees and terms vary by jurisdiction and plan version, so check the plan documents before purchasing or filing a claim. AppleCare does not necessarily make every repair free.

If the watch is dead, erased, or not paired

If you have the physical watch

Try the band-slot engraving or rear engraving. If it can be charged but will not complete setup, the case, box, and purchase records may still identify it.

If you have the paired iPhone but not the watch

Use Apple Watch app > My Watch > General > About. This is usually the best route because it can reveal the model, serial number, and cellular information without the watch being in your possession.

If you have neither working device

Check, in order:

1. Apple Account device records and Apple Support tools.
2. The original box label.
3. The receipt or order email.
4. The physical band-slot engraving.
5. Apple Support or an Apple Authorized Service Provider.

Apple may not disclose every device detail without account verification or proof of ownership.

If the watch was erased

Erasing it does not eliminate every identification method. The A-number, case engraving, box, receipt, paired-device history, and Apple Account records may still identify it. However, an erased watch may not show the former owner’s account or coverage information until it is set up again.

Troubleshoot a failed coverage or identification check

If Apple’s coverage checker rejects the serial number, the most common causes are a transcription error, confusing zero with the letter O, entering the IMEI instead of the serial number, an incorrect purchase date, or an Apple record that has not updated after a replacement device.

1. Re-copy the serial number from the About screen.
2. Compare it with the engraving, box, or receipt.
3. Make sure you are entering the serial number rather than the A-number or IMEI.
4. Sign in to My Support.
5. Keep proof of purchase.
6. Contact Apple if the date, ownership record, or replacement-device record is incorrect.

If an old article does not list your A-number, use Apple’s live identification page. Older charts may omit regional variants, cellular versions, Nike or Hermès editions, replacement cases, and newly released models.

Checklist for buying or selling a used Apple Watch

A serial-number lookup alone does not prove that a used watch is legitimate, unlocked, or free of Activation Lock.

For buyers

• See the actual watch powered on.
• Open Settings > General > About and confirm the model name and A-number.
• Confirm the case size from the device or Apple’s model list.
• Check whether it is GPS or GPS + Cellular and, if cellular, whether an IMEI is present.
• Ask the seller to erase it correctly.
• Make sure it reaches the setup screen without requesting another person’s Apple Account.
• Do not treat a seller-provided serial number as proof of ownership or Activation Lock status.

For sellers

• Record the model, size, connectivity, serial number, and IMEI if applicable.
• Remove personal data and erase the watch using Apple’s current instructions.
• Make sure Activation Lock is removed and the watch is no longer tied to your Apple Account.
• Mask the full serial number in a public listing where possible.
• Keep the serial number and a copy of the bill of sale privately.

Quick reference

For a permanent record, securely save the model name, A-number, case size, connectivity, serial number, IMEI if applicable, purchase date, and coverage expiration date. Keeping these details private but accessible makes future repairs, insurance claims, resale, and theft-and-loss reporting much easier.

Quick Recap

Bestseller No. 1

Apple Watch Series 11 [GPS 46mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant

$360.05

Bestseller No. 2

Apple Watch Series 11 [GPS 42mm] Smartwatch with Rose Gold Aluminum Case with Light Blush Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant

$331.55

Bestseller No. 3

Apple Watch SE 3 [GPS 40mm] Smartwatch with Starlight Aluminum Case with Starlight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant

Bestseller No. 4

Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant

$208.05

Bestseller No. 5

Apple Watch Series 11 [GPS 42mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant

$331.55

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.