The fastest way to tell what Apple Watch you have is to flip it over and read the engraving on the back. The engraving shows the series name, case size, material, and whether it is a GPS or GPS plus cellular model. If the engraving is too small to read, find the model number in the Watch app on your iPhone or in the Settings app on the watch itself, then match that number to your Apple Watch series.
Apple Watches from different generations look almost identical, so it is normal to be unsure which one is on your wrist. Knowing your exact model matters when you buy a band, trade the watch in, sell it, or check watchOS compatibility. Below are four simple methods that will identify your Apple Watch in under a minute.
Method 1: Check the Engraving on the Back of Your Watch
This is the quickest method and works without your iPhone. Take the watch off your wrist and look at the round sensor area on the back.
On most Apple Watch models, the engraving around the back lists the series name directly, such as Apple Watch Series 9, Apple Watch SE, or Apple Watch Ultra. It also lists the case size in millimeters, the case material, and whether the watch supports GPS only or GPS plus cellular.
If the text is tiny, hold the watch under a bright light or use your phone camera to zoom in. On stainless steel and titanium models, the model number is not on the back. Instead, you need to slide one of the bands off and look inside the band slot, where the model number is etched into the case.
The Digital Crown is another quick clue. On Series 3 through Series 9 and the SE models, a red ring around the Digital Crown means your watch is a GPS plus cellular model, while a plain crown means GPS only. On Series 10 and newer, cellular models use a ring that matches the case color instead of red, and every Ultra model uses an orange ring.
Method 2: Find the Model Number in the Watch App on Your iPhone
If the engraving is worn off or hard to read, the Watch app on your iPhone gives you the exact model number. Your watch must be paired with the iPhone for this to work.
Open the Watch app on your iPhone and tap the My Watch tab at the bottom.
Tap General, then tap About.
Find the Model field. You will see a part number that begins with the letter M, something like MLQ53LL/A.
Tap the part number once. It will change to show a five digit number that begins with the letter A, something like A2984. That is your Apple Watch model number.
Write the number down or take a screenshot, then compare it with the model number list further below in this article.
Method 3: Check the Model Number on the Watch Itself
You can also find the model number without your iPhone, right on the watch. This method is handy if your iPhone is not nearby or if the watch is paired with someone else’s phone.
Press the Digital Crown to open the app grid, then tap the Settings app, which looks like a gray gear.
Tap General, then tap About.
Scroll to the Model field. You will first see a part number beginning with M. Tap it to reveal the model number beginning with A.
Method 4: Look at the Original Box
If you still have the box your Apple Watch came in, the series and size are printed on the label on the back of the box. The model number is printed there too.
This method only works if you kept the packaging and you are sure the box belongs to the watch in your hand. If you own more than one Apple Watch, double check with one of the methods above.
Match Your Model Number to Your Apple Watch
Once you have your model number, find it in the list below to learn which Apple Watch you have. The smaller case size is listed first, followed by the larger case size.
Recent Models
Apple Watch Series 12: GPS 42mm A3581, 46mm A3584; GPS plus cellular 42mm A3582, 46mm A3587
Apple Watch Ultra 4: 49mm A3579
Apple Watch Series 11: GPS 42mm A3331, 46mm A3333; GPS plus cellular 42mm A3335, 46mm A3337
Apple Watch SE 3: GPS 40mm A3324, 44mm A3325; GPS plus cellular 40mm A3326, 44mm A3328
Apple Watch Ultra 3: 49mm A3281
Apple Watch Series 10: GPS 42mm A2997, 46mm A2999; GPS plus cellular 42mm A3001, 46mm A3003
Apple Watch Ultra 2: 49mm A2986
Apple Watch Series 9: GPS 41mm A2978, 45mm A2980; GPS plus cellular 41mm A2982, 45mm A2984
Apple Watch Ultra: 49mm A2622 or A2684
Older Models
Apple Watch Series 8: GPS 41mm A2770, 45mm A2771; GPS plus cellular 41mm A2772, 45mm A2774
Apple Watch SE 2: GPS 40mm A2722, 44mm A2723; GPS plus cellular 40mm A2726 or A2725, 44mm A2727 or A2724
Apple Watch Series 7: GPS 41mm A2473, 45mm A2474; GPS plus cellular 41mm A2475 or A2476, 45mm A2477 or A2478
Apple Watch Series 6: GPS 40mm A2291, 44mm A2292; GPS plus cellular 40mm A2293 or A2375, 44mm A2294 or A2376
Apple Watch SE 1: GPS 40mm A2351, 44mm A2352; GPS plus cellular 40mm A2353 or A2355, 44mm A2354 or A2356
Apple Watch Series 5: GPS 40mm A2092, 44mm A2093; GPS plus cellular 40mm A2094 or A2156, 44mm A2095 or A2157
Apple Watch Series 4: GPS 40mm A1977, 44mm A1978; GPS plus cellular 40mm A1975 or A2007, 44mm A1976 or A2008
Apple Watch Series 3: GPS 38mm A1858, 42mm A1859; GPS plus cellular 38mm A1860, A1889, or A1890; 42mm A1861, A1891, or A1892
Apple Watch Series 2: 38mm A1757, 42mm A1758 (Edition ceramic: 38mm A1816, 42mm A1817)
Apple Watch Series 1: 38mm A1802, 42mm A1803
Apple Watch (1st generation): 38mm A1553, 42mm A1554
Note: some models have more than one model number because Apple released regional versions for different countries. If your number is close to one in the list but not exact, check Apple’s official “Identify your Apple Watch” support page for your region.
How to Tell If Your Apple Watch Is GPS or GPS Plus Cellular
The Digital Crown is the fastest visual clue. Look at the round dial on the side of the watch. On Series 3 through Series 9 and SE models, a red ring or red dot on the crown means GPS plus cellular, while a plain crown means GPS only. On Series 10 and newer, cellular models have a ring that matches the case color instead of a red one, and every Ultra model has an orange ring.
You can confirm this in the settings too. On your iPhone, open the Watch app, tap the My Watch tab, tap General, then tap About. Look at the model name line. It will say either GPS or GPS plus Cellular.
Knowing this matters because only cellular models can make calls, send texts, and stream music without your iPhone nearby, and only cellular models need a separate data plan from your carrier.
Common Mistakes When Identifying an Apple Watch
Mixing up the part number and the model number. The part number begins with M and is not what you match against Apple’s list. Always tap it once to reveal the model number, which begins with A.
Thinking “7000 series” means Series 7. On older aluminum models, the back may say “7000 series.” That refers to the grade of aluminum used for the case, not the watch generation. Series 1 and Series 2 watches can carry this marking.
Confusing band size with case size. Bands come in sizes like S/M and M/L, but the number that identifies your watch is the case size in millimeters, such as 41mm or 45mm.
Assuming a Nike or Hermes band means a special watch. Nike and Hermes are band and face collections, not separate watch generations. A Series 9 with a Nike band is still a Series 9.
People Also Ask
How do I know what generation my Apple Watch is?
The easiest way is to read the back of the watch, where the series name is engraved. If you cannot read it, find the model number in the Watch app under General, then About, and match it to the model number list above.
Where is the model number on an Apple Watch?
You can find it in three places: engraved on the back of the watch, inside the band slot on stainless steel and titanium models, and in software under Settings, then General, then About, on both the watch and the iPhone Watch app.
What does the A number on my Apple Watch mean?
The A number is the official model number assigned by Apple. Each Apple Watch series and size has its own A number, which is why it is the most reliable way to identify exactly which watch you own.
Can I tell what Apple Watch I have from the serial number?
The serial number identifies your individual unit, not the model. Apple can look it up, but for identifying the series yourself, the model number is what you need.
How do I tell the difference between Apple Watch SE 1 and SE 2?
Check the model number. SE 1 models are A2351 through A2356, while SE 2 models are A2722 through A2727. The back engraving on an SE 2 also says “Apple Watch SE” with a nylon composite back instead of ceramic.
Conclusion
Identifying your Apple Watch takes less than a minute. Flip the watch over and read the engraving for the fastest answer, or find the A model number in the Watch app and match it to the list above.
Once you know your series, size, and whether it is GPS or cellular, buying bands, checking updates, and selling or trading in your watch all become much simpler.
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