Samsung
Device summary
Xiaomi
Xiaomi Watch S4
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2024 | 2024 |
| Starting price | — | — |
| Display size | 1.5-inch | 1.4-inch |
| Dimensions | 47.1 mm × 47.4 mm × 12.1 mm | 47.3 mm × 47.3 mm × 12.0 mm |
| Weight | 61 g | 45 g |
| Front material | Sapphire crystal | — |
| Back material | — | — |
| Display | ||
| Display technology | Super AMOLED | AMOLED |
| Resolution | 480 × 480 | 466 × 466 |
| Peak brightness | 3000 nits | — |
| Protection | Sapphire crystal | — |
| Performance | ||
| Chipset | Exynos W1000 (5 Core, 3nm) | — |
| RAM | 2 GB | — |
| Storage | 32 GB | — |
| Expandable storage | No | No |
| Battery & charging | ||
| Charging standard | Wireless charging (WPC) with Fast Charging | Magnetic charging dock |
| Battery type | Lithium-ion | Lithium-ion polymer |
| Battery capacity | 590 mAh | — |
| Connectivity | ||
| Cellular | LTE, Dual-frequency GPS (L1+L5) | GPS / multi-GNSS |
| Wi‑Fi | Wi‑Fi 2.4GHz & 5GHz | — |
| Bluetooth | Bluetooth 5.3 | Bluetooth |
| NFC | Yes | Yes |
| Build & durability | ||
| Frame | Titanium (Grade 4) | — |
| Ingress protection | 10ATM / IP68 / MIL-STD-810H | 5 ATM |
| Basic information | ||
|---|---|---|
| Release year | 2024 | 2024 |
| Starting price | — | — |
| Display size | 1.5-inch | 1.4-inch |
| Dimensions | 47.1 mm × 47.4 mm × 12.1 mm | 47.3 mm × 47.3 mm × 12.0 mm |
| Weight | 61 g | 45 g |
| Front material | Sapphire crystal | — |
| Back material | — | — |
| Display | ||
| Display technology | Super AMOLED | AMOLED |
| Resolution | 480 × 480 | 466 × 466 |
| Peak brightness | 3000 nits | — |
| Protection | Sapphire crystal | — |
| Performance | ||
| Chipset | Exynos W1000 (5 Core, 3nm) | — |
| RAM | 2 GB | — |
| Storage | 32 GB | — |
| Expandable storage | No | No |
| Battery & charging | ||
| Charging standard | Wireless charging (WPC) with Fast Charging | Magnetic charging dock |
| Battery type | Lithium-ion | Lithium-ion polymer |
| Battery capacity | 590 mAh | — |
| Connectivity | ||
| Cellular | LTE, Dual-frequency GPS (L1+L5) | GPS / multi-GNSS |
| Wi‑Fi | Wi‑Fi 2.4GHz & 5GHz | — |
| Bluetooth | Bluetooth 5.3 | Bluetooth |
| NFC | Yes | Yes |
| Build & durability | ||
| Frame | Titanium (Grade 4) | — |
| Ingress protection | 10ATM / IP68 / MIL-STD-810H | 5 ATM |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Weight
Xiaomi Watch S4
16 g lighter
Height
Very similar height
Width
Very similar width
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 S4 is 0.2 mm (0.4% relative to Galaxy Watch Ultra) wider. Check this difference against the width of your current device and pocket opening.
- Galaxy Watch Ultra is 0.1 mm (0.2% relative to Xiaomi Watch S4) taller. This describes the body outline; screen diagonal alone does not tell you the overall size.
- Galaxy Watch Ultra is 0.1 mm (0.8% relative to Xiaomi Watch S4) thicker. Cases and camera protrusions can change the clearance you need.
- Xiaomi Watch S4 is 16 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.
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.