Size chart: Apple Watch

Apple Watch Sizing Chart

Which size fits my Apple Watch?

Check the engraving on the back of your watch casing to find your size (mm).

Select Option: 38-40-41-42mm Select Option: 44-45-46mm & Ultra
• 38mm (S 1-3)
• 40mm (SE, 4-6)
• 41mm (S 7-9)
• 42mm (S 10)
• 44mm (SE, 4-6)
• 45mm (S 7-9)
• 46mm (S 10)
• 49mm (Ultra)
• 42mm (S 1-3)
⚠️ Have a 42mm Watch? Older Series 1, 2, or 3 (42mm) need the 44-46mm & Ultra option.

How to change the strap

1️⃣
Remove: Hold the release button on the back of the watch case and slide the old strap out sideways.
2️⃣
Insert: Ensure the small metal contacts on the new strap are facing UP (towards the watch sensors).
3️⃣
Lock: Slide in until you hear a click. Gently wiggle to confirm it is locked.