A3331: which Apple model is it?
Model number A3331
Apple Watch
2025 · S10
Apple lists it as Apple Watch Series 11 (GPS) 42mm (North America, Europe, Asia Pacific).
See its specs
From Apple's Identify your Apple Watch page.
Check the number on your device
Apple Watch
On your iPhone
- Open the Apple Watch app on your iPhone.
- Tap the My Watch tab.
- Tap General, then tap About.
- Find the Model Number field. It first shows the part number, which begins with "M".
- Tap the Model Number field. It changes to the model number, which begins with "A" (for example A3581).
On the watch
- The engraving on the back of your Apple Watch shows the case size and more information.