Apple Watch Compatibility 2026
APPLE WATCH BANDS
Compatible case sizes
Our watch bands fit all Apple Watch models - only the case size matters.
Small Apple Watch (38/40/41/42 mm)
- 38 mm: Series 1, Series 2, Series 3
- 40 mm: Series 4, Series 5, Series 6, SE, SE 2, SE 3
- 41 mm: Series 7, Series 8, Series 9
- 42 mm: Series 10, Series 11
Large Apple Watch (42/44/45/46/49 mm)
- 42 mm: Series 1, Series 2, Series 3
- 44 mm: Series 4, Series 5, Series 6, SE, SE 2, SE 3
- 45 mm: Series 7, Series 8, Series 9
- 46 mm: Series 10, Series 11
- 49 mm: Ultra, Ultra 2, Ultra 3
Caution at 42 mm
For Series 1, Series 2, and Series 3, 42 mm was the large size (38 mm was the small). For Series 10 and Series 11, it's the other way around: 42 mm is the small size, 46 mm the large. Please always check the exact model name, not just the millimeter measurement.
Not sure which model you have? The model name and case size are printed on the back of your Apple Watch:
