Apple
Device summary
Xiaomi
Xiaomi Watch 2 Pro
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2026 | 2023 |
| Starting price | $799 | — |
| Display size | — | 1.4-inch |
| Dimensions | 44.0 mm × 49.0 mm × 12.0 mm | 45.9 mm × 47.6 mm × 11.8 mm |
| Weight | 63 g | 55 g |
| Front material | Sapphire crystal | — |
| Back material | — | — |
| Display | ||
| Display technology | Always-On Retina LTPO3 OLED with wide-angle OLEDs | AMOLED |
| Resolution | 422 × 514 | 466 × 466 |
| Peak brightness | 3000 nits | — |
| Protection | Flat sapphire crystal | — |
| Performance | ||
| Chipset | Apple S11 SiP | Snapdragon W5+ Gen 1 |
| Storage | 64 GB | 32 GB |
| Expandable storage | No | No |
| RAM | — | 2 GB |
| Battery & charging | ||
| Charging standard | Apple Watch Magnetic Fast Charger (up to 80% in about 45 minutes) | Magnetic charging dock |
| Battery type | Built-in rechargeable lithium-ion | Lithium-ion polymer |
| Connectivity | ||
| Cellular | 5G RedCap and LTE | GPS / multi-GNSS |
| Wi‑Fi | Wi‑Fi 4 (802.11n) | — |
| Bluetooth | Bluetooth 5.3 | Bluetooth |
| NFC | Yes | Yes |
| Satellite | Emergency SOS, Messages, and Find My via satellite | — |
| Build & durability | ||
| Frame | Grade 5 titanium | — |
| Ingress protection | Water resistance 100m; IP6X dust resistance; EN13319 recreational scuba to 40m | 5 ATM |
| Basic information | ||
|---|---|---|
| Release year | 2026 | 2023 |
| Starting price | $799 | — |
| Display size | — | 1.4-inch |
| Dimensions | 44.0 mm × 49.0 mm × 12.0 mm | 45.9 mm × 47.6 mm × 11.8 mm |
| Weight | 63 g | 55 g |
| Front material | Sapphire crystal | — |
| Back material | — | — |
| Display | ||
| Display technology | Always-On Retina LTPO3 OLED with wide-angle OLEDs | AMOLED |
| Resolution | 422 × 514 | 466 × 466 |
| Peak brightness | 3000 nits | — |
| Protection | Flat sapphire crystal | — |
| Performance | ||
| Chipset | Apple S11 SiP | Snapdragon W5+ Gen 1 |
| Storage | 64 GB | 32 GB |
| Expandable storage | No | No |
| RAM | — | 2 GB |
| Battery & charging | ||
| Charging standard | Apple Watch Magnetic Fast Charger (up to 80% in about 45 minutes) | Magnetic charging dock |
| Battery type | Built-in rechargeable lithium-ion | Lithium-ion polymer |
| Connectivity | ||
| Cellular | 5G RedCap and LTE | GPS / multi-GNSS |
| Wi‑Fi | Wi‑Fi 4 (802.11n) | — |
| Bluetooth | Bluetooth 5.3 | Bluetooth |
| NFC | Yes | Yes |
| Satellite | Emergency SOS, Messages, and Find My via satellite | — |
| Build & durability | ||
| Frame | Grade 5 titanium | — |
| Ingress protection | Water resistance 100m; IP6X dust resistance; EN13319 recreational scuba to 40m | 5 ATM |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Weight
Xiaomi Watch 2 Pro
9 g lighter · minor difference
Width
Xiaomi Watch 2 Pro
1.9 mm wider · minor difference
Height
Apple Watch Ultra 4
1.4 mm taller · minor difference
Thickness
Very similar thickness
What these size differences mean
Calculated from the dimensions shown, rounded to 0.1 mm and 1 g. Percentages use the smaller measurement as the reference. Fold and rotation settings affect the dimensions compared.
- Xiaomi Watch 2 Pro is 1.9 mm (4.3% relative to Apple Watch Ultra 4) wider. Check this difference against the width of your current device and pocket opening.
- Apple Watch Ultra 4 is 1.4 mm (2.9% relative to Xiaomi Watch 2 Pro) taller. This describes the body outline; screen diagonal alone does not tell you the overall size.
- Apple Watch Ultra 4 is 0.2 mm (1.7% relative to Xiaomi Watch 2 Pro) thicker. Cases and camera protrusions can change the clearance you need.
- Xiaomi Watch 2 Pro is 8 g lighter. This is the listed device-weight difference, not a measured comfort rating.
Use these figures to compare physical size. They do not establish one-handed reach, pocket fit, durability or an overall winner.
Sources and measurement notes
Sizometry compares published specifications and calculates differences. These are not hands-on measurements or tests of comfort, performance or pocket fit.
Apple Watch Ultra 4
Xiaomi Watch 2 Pro
Check the exact model, year, region and configuration on the linked page. References may cover several variants. Folded and unfolded dimensions differ; cases and camera protrusions may change the space a device needs. Drawings share a relative scale and are not calibrated to life size on your screen.