Apple Watch band widths are consistent across generations — there are only two width options, so it's easy to get the right fit.
Wide — 44 / 45 / 46 / 49 mm
Fits: Apple Watch Ultra 1/2/3 (49mm), Series 11/10 (46mm), Series 7/8/9 (45mm), Series 4/5/6/SE (44mm).
Narrow — 38 / 40 / 41 / 42 mm
Fits: Series 11/10 (42mm), Series 7/8/9 (41mm), Series 4/5/6/SE (40mm), Series 3 and older (38mm).
How to check your watch size
Open the Watch app on your iPhone → General → About → Case Size. Or check the engraving on the back of your Apple Watch case.
Still unsure? Email us at support@casavo.store — we'll help you pick the right size.