A2478: which Apple model is it?
Model number A2478
Apple Watch
2021 · S7
Apple lists it as Apple Watch Series 7 (GPS + Cellular) 45mm (Europe, Asia Pacific, and China mainland).
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.