OPPO
OPPO Watch X3 vs Xiaomi Watch S4
Device summary
Xiaomi
Xiaomi Watch S4
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2026 | 2024 |
| Starting price | — | — |
| Display size | 1.5-inch | 1.4-inch |
| Dimensions | 47.4 mm × 47.4 mm × 11.0 mm | 47.3 mm × 47.3 mm × 12.0 mm |
| Weight | 43 g | 45 g |
| Front material | Sapphire crystal | — |
| Back material | PA with fiberglass | — |
| Display | ||
| Display technology | LTPO AMOLED | AMOLED |
| Resolution | 466 × 466 | 466 × 466 |
| Peak brightness | 3000 nits | — |
| Protection | Sapphire crystal | — |
| Performance | ||
| Chipset | Snapdragon W5 + BES2800BP MCU | — |
| RAM | 2 GB | — |
| Storage | 32 GB | — |
| Expandable storage | No | No |
| Battery & charging | ||
| Typical capacity | 646 mAh | — |
| Rated capacity | 632 mAh | — |
| Charging standard | Watch VOOC Flash Charge (~75 min; 10 min ≈ 1 day) | Magnetic charging dock |
| Battery type | Lithium-ion (silicon-carbon) | Lithium-ion polymer |
| Connectivity | ||
| Cellular | Dual-band GPS L1+L5 / multi-GNSS | GPS / multi-GNSS |
| Wi‑Fi | WLAN 2.4 / 5 GHz | — |
| Bluetooth | Bluetooth 5.2 | Bluetooth |
| NFC | Yes | Yes |
| Build & durability | ||
| Frame | Titanium alloy (TC4) | — |
| Ingress protection | 5 ATM / IP68 / IP69 / MIL-STD-810H | 5 ATM |
Basic information
Release year
- OPPO Watch X3
- 2026
- Xiaomi Watch S4
- 2024
Starting price
- OPPO Watch X3
- —
- Xiaomi Watch S4
- —
Display size
- OPPO Watch X3
- 1.5-inch
- Xiaomi Watch S4
- 1.4-inch
Dimensions
- OPPO Watch X3
- 47.4 mm × 47.4 mm × 11.0 mm
- Xiaomi Watch S4
- 47.3 mm × 47.3 mm × 12.0 mm
Weight
- OPPO Watch X3
- 43 g
- Xiaomi Watch S4
- 45 g
Front material
- OPPO Watch X3
- Sapphire crystal
- Xiaomi Watch S4
- —
Back material
- OPPO Watch X3
- PA with fiberglass
- Xiaomi Watch S4
- —
Display
Display technology
- OPPO Watch X3
- LTPO AMOLED
- Xiaomi Watch S4
- AMOLED
Resolution
- OPPO Watch X3
- 466 × 466
- Xiaomi Watch S4
- 466 × 466
Peak brightness
- OPPO Watch X3
- 3000 nits
- Xiaomi Watch S4
- —
Protection
- OPPO Watch X3
- Sapphire crystal
- Xiaomi Watch S4
- —
Performance
Chipset
- OPPO Watch X3
- Snapdragon W5 + BES2800BP MCU
- Xiaomi Watch S4
- —
RAM
- OPPO Watch X3
- 2 GB
- Xiaomi Watch S4
- —
Storage
- OPPO Watch X3
- 32 GB
- Xiaomi Watch S4
- —
Expandable storage
- OPPO Watch X3
- No
- Xiaomi Watch S4
- No
Battery & charging
Typical capacity
- OPPO Watch X3
- 646 mAh
- Xiaomi Watch S4
- —
Rated capacity
- OPPO Watch X3
- 632 mAh
- Xiaomi Watch S4
- —
Charging standard
- OPPO Watch X3
- Watch VOOC Flash Charge (~75 min; 10 min ≈ 1 day)
- Xiaomi Watch S4
- Magnetic charging dock
Battery type
- OPPO Watch X3
- Lithium-ion (silicon-carbon)
- Xiaomi Watch S4
- Lithium-ion polymer
Connectivity
Cellular
- OPPO Watch X3
- Dual-band GPS L1+L5 / multi-GNSS
- Xiaomi Watch S4
- GPS / multi-GNSS
Wi‑Fi
- OPPO Watch X3
- WLAN 2.4 / 5 GHz
- Xiaomi Watch S4
- —
Bluetooth
- OPPO Watch X3
- Bluetooth 5.2
- Xiaomi Watch S4
- Bluetooth
NFC
- OPPO Watch X3
- Yes
- Xiaomi Watch S4
- Yes
Build & durability
Frame
- OPPO Watch X3
- Titanium alloy (TC4)
- Xiaomi Watch S4
- —
Ingress protection
- OPPO Watch X3
- 5 ATM / IP68 / IP69 / MIL-STD-810H
- Xiaomi Watch S4
- 5 ATM
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Thickness
OPPO Watch X3
1 mm thinner
Height
Very similar height
Width
Very similar width
Weight
Very similar weight