When placed side by side, the Apple Watch Ultra 3 and Apple Magic Mouse reveal a clear story. In terms of height, the Apple Watch Ultra 3 stands at 49.0 mm while the Apple Magic Mouse measures 113.5 mm. The Apple Magic Mouse is 64.5 mm taller. Looking at width, the Apple Watch Ultra 3 is 44.0 mm across versus the Apple Magic Mouse's 57.7 mm. The Apple Magic Mouse is 13.7 mm wider. For thickness, the Apple Watch Ultra 3 comes in at 14.4 mm compared to the Apple Magic Mouse's 21.6 mm. The Apple Magic Mouse is 7.2 mm thicker.
The Apple Magic Mouse is heavier at 99 grams versus 61.4 grams for the Apple Watch Ultra 3. That is a 37.6-gram difference (61.2%). While this may seem small, you can feel a noticeable difference during extended use.
| Metric | Apple Watch Ultra 3 | Apple Magic Mouse | Diff |
|---|---|---|---|
| Width | 44.0 mm | 57.7 mm | -13.7 mm |
| Height | 49.0 mm | 113.5 mm | -64.5 mm |
| Depth | 14.4 mm | 21.6 mm | -7.2 mm |
| Weight | 61.4 g | 99 g | -37.6 mm |