Short answer
Most Apple Watch damage happens to the edges and screen when you knock into door frames, desks and walls. A slim case that covers those edges protects the watch without turning it into a brick.
Where an Apple Watch gets damaged
Your wrist moves all day, and the watch is the first thing to hit a door frame or the edge of a table. The corners of the screen take most of those knocks, followed by the sides of the watch.
Which kind of case to choose
| Slim case | Rugged case | |
|---|---|---|
| Covers the edges | Yes | Yes |
| Feels on the wrist | Close to the bare watch | Heavy and wide |
| Under a shirt sleeve | Fits | Catches |
| Best for | Everyday wear | Outdoor work and extreme sports |
Ours comes as a set: a slim case for the watch and a matching band, so the watch looks like one piece rather than a watch with a cover on.
How to find your size
Apple Watch cases are made for one model and one size. To find your size, check the engraving on the back of your watch (Apple). It shows the size in millimetres, for example 42 mm or 46 mm.
You can also find the model in the Watch app on your iPhone: tap My Watch, then General, then About.
| Sizes | |
|---|---|
| Apple Watch Ultra 4 | 49 mm |
| Apple Watch Ultra, Ultra 2 and Ultra 3 | 49 mm |
| Series 12 | 42 mm, 46 mm |
| Series 10 and 11 | 42 mm, 46 mm |
| Series 7, 8 and 9 | 41 mm, 45 mm |
| Series 4, 5, 6 and SE (all generations) | 40 mm, 44 mm |
FAQ
Do I need a case for my Apple Watch?
Not to use it, but a slim case protects the edges and screen corners against everyday knocks without adding much bulk.
Does a case make the Apple Watch bulky?
A slim one doesn't. It follows the shape of the watch and still fits under a shirt sleeve.
How do I know my Apple Watch size?
Check the engraving on the back of the watch. It shows the size in millimetres.
RD Apple Watch Case and Band
Protection that matches
A slim case and a matching band, made for Apple Watch Series 3 up to Series 12 and Ultra.
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