When placed side by side, the iPhone 15 Pro and Apple Watch Ultra 3 reveal a clear story. In terms of height, the iPhone 15 Pro stands at 146.6 mm while the Apple Watch Ultra 3 measures 49.0 mm. The iPhone 15 Pro is 97.6 mm taller. Looking at width, the iPhone 15 Pro is 70.6 mm across versus the Apple Watch Ultra 3's 44.0 mm. The iPhone 15 Pro is 26.6 mm wider. For thickness, the iPhone 15 Pro comes in at 8.3 mm compared to the Apple Watch Ultra 3's 14.4 mm. The Apple Watch Ultra 3 is 6.2 mm thicker.
The iPhone 15 Pro is heavier at 187 grams versus 61.4 grams for the Apple Watch Ultra 3. That is a 125.6-gram difference (204.6%). While this may seem small, you can feel a noticeable difference during extended use.
Fits comfortably in most front pockets.
Comfortable to reach all corners with one thumb.
| Metric | iPhone 15 Pro | Apple Watch Ultra 3 | Diff |
|---|---|---|---|
| Width | 70.6 mm | 44.0 mm | +26.6 mm |
| Height | 146.6 mm | 49.0 mm | +97.6 mm |
| Depth | 8.3 mm | 14.4 mm | -6.2 mm |
| Weight | 187 g | 61.4 g | +125.6 mm |