Remove your Apple Watch and flip it to view the underside.
On the top or top right area, you'll find the size of your Apple Watch displayed in millimeters (mm).
![](https://cdn.shopify.com/s/files/1/0670/4709/6560/files/appleSizeGuide.jpg?v=1700645256)
![](http://hellostrap.com/cdn/shop/files/3_b99289bc-5d03-49aa-a3d2-81ef35103f7b_60x60.jpg?v=1701150814)
Trail Loop - Green/Grey
$51.00
38 / 40 / 41mm
- 38 / 40 / 41mm
- 42 / 44 / 45 / 49mm
Trail Loop - Green/Grey
Easy Installation Guide
How to change your strap