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/8_5b268b19-2792-4835-9ab7-e2ba44e3ed54_60x60.jpg?v=1701149324)
Ocean Band - Blue Fog & Starlight
$49.99
38 / 40 / 41mm
- 38 / 40 / 41mm
- 42 / 44 / 45 / 49mm
Ocean Band - Blue Fog & Starlight
Easy Installation Guide
How to change your strap