The fastest way to check your Apple Watch series:
- Look at the back of the watch – Around the sensor circle, you’ll see engraving like “Series 9, 45mm Aluminum.” This method works for everyone.
- If your watch is paired with an iPhone – Open the Watch app > General > About, then tap Model until it shows a code starting with “A.” That code reveals the exact series.
Between these two, you’ll always know what Apple Watch you have — no guesswork required.
Why Knowing Your Series Matters
Most people want to know their Apple Watch series for one of three reasons:
- Buying a band: Different generations use slightly different case sizes, so knowing your series helps avoid ordering the wrong size.
- Selling or trading in: Buyers will always ask which model it is.
- Software updates: Some features only work on certain generations, so you’ll want to confirm compatibility.
Step-by-Step: 3 Ways to Identify Your Apple Watch Series
1. Look at the Back of the Watch Case
- Flip your watch over and look around the sensor circle.
- You should see engraving that includes the Series (e.g., “Series 7”) as well as the case size (e.g., 41mm).
2. Check Directly on Apple Watch
- On your Apple Watch, go to Settings > General > About.
- Scroll down to Model — again, tap once if it starts with “M” to reveal the “A” code.
- Compare the “A” code with Apple’s reference list.
3. Check in the Watch App on iPhone
- Open the Watch app.
- Tap General > About.
- Scroll to Model. If you only see a number starting with “M,” tap it once — it will switch to a code starting with “A.”
- Use that “A” code to identify your exact series (for example, A2291 = Series 6).
Series Reference Chart
| Series | Year Released | Common Sizes | Model Code Examples |
| Apple Watch Series 10 | 2024 | 42mm, 46mm | A2986, A2987 |
| Apple Watch Ultra 2 | 2023 | 49mm | A2988 |
| Apple Watch Series 9 | 2023 | 41mm, 45mm | A2982, A2984 |
| Apple Watch Ultra | 2022 | 49mm | A2622 |
| Apple Watch Series 8 | 2022 | 41mm, 45mm | A2770, A2771 |
| Apple Watch SE (2nd gen) | 2022 | 40mm, 44mm | A2722, A2723 |
| Apple Watch Series 7 | 2021 | 41mm, 45mm | A2473, A2474 |
| Apple Watch Series 6 | 2020 | 40mm, 44mm | A2291, A2292 |
| Apple Watch SE (1st gen) | 2020 | 40mm, 44mm | A2351, A2352 |
| Apple Watch Series 5 | 2019 | 40mm, 44mm | A2092, A2093 |
| Apple Watch Series 4 | 2018 | 40mm, 44mm | A1975, A1976 |
| Apple Watch Series 3 | 2017 | 38mm, 42mm | A1858, A1859 |
| Apple Watch Series 2 | 2016 | 38mm, 42mm | A1757, A1758 |
| Apple Watch Series 1 | 2016 | 38mm, 42mm | A1802, A1803 |
| Apple Watch (1st gen / Series 0) | 2015 | 38mm, 42mm | A1553, A1554 |
(Tip: Apple maintains an official model list if you want to double-check.)
My Experience
The first time I tried to buy a new band, I assumed that all Apple Watches used the same size. I ordered one that looked perfect online, only to realize later that my Series 6 used 44mm bands, while the newer Series 9 uses 45mm. That 1mm difference meant the fit wasn’t quite right. Since then, I always double-check the series before buying.
FAQ
Can I tell my series just by the case size?
Not always. Several generations share the same sizes, so you’ll need the model code for certainty.
Is the model number and series the same thing?
No. The model number is a technical code (like A2291), while “Series 6” is the marketing name. You need to match the model to the series.
What if the engraving is worn off?
If you can’t read the back of the watch, the Watch app or Settings app on the device will still show the model code.
Final Thoughts
Finding your Apple Watch series takes less than a minute once you know where to look. It’s worth checking — especially if you’re shopping for a new band, selling your device, or making sure your watch is compatible with the latest features. Knowing your series now can save you time and frustration later.
