Compare Xiaomi Watch S4 vs Apple Watch Ultra 3
| Xiaomi Watch S4 Choose another device | Apple Watch Ultra 3 Choose another device | |
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Launch
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| Version | October 2024 | September 2025 |
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Network
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| Technology | 4G | 5G |
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Body
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| Dimensions | 47.3 x 47.3 x 12 mm (1.86 x 1.86 x 0.47 in) | 49 x 44 x 12 mm (1.93 x 1.73 x 0.47 in) |
| Weight | 44.5 g (1.59 oz) | 61.6 g or 61.8 g |
| SIM | eSIM | eSIM |
| Design | Aluminum alloy frame, stainless steel bezel | Sapphire crystal front, ceramic/sapphire crystal back, titanium frame (grade 5) |
| Others | Waterproof (5ATM) | IP6X certified, 100m water resistant, 40m swimproof/diving |
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Display
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| Type | AMOLED | Retina LTPO3 OLED |
| Size | 1.43 inches | 1.98 inches |
| Resolution | 466 x 466 pixels | 514 x 422 pixels |
| Protection | Scratch/drop-proof glass | Sapphire crystal glass |
| Various | Wide-angle OLED | |
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Platform
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| Operating System | HyperOS 2 | watchOS 26 |
| Chipset | Apple S10 | |
| CPU | Dual-core | |
| GPU | PowerVR | |
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Memory
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| Card Slot | No | No |
| Internal | 64GB | |
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Camera
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| Primary | No | No |
| Features | ||
| Video | ||
| Selfie | ||
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Sound
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| Loudspeaker | Yes | Yes, with dual speakers |
| 3.5mm Jack | No | No |
| Extra | ||
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Comms
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| Wifi | No | b/g/n, dual-band |
| Bluetooth | 5.3 | 5.3 |
| GPS | Yes | Yes |
| NFC | Yes | Yes |
| Infrared | ||
| Radio | No | No |
| USB | No | No |
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Features
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| Sensors | Accelerometer, gyro, compass, barometer, heart rate, SpO2 | Accelerometer, gyro, heart rate, barometer, always-on altimeter (-500m to 9000m), compass, SpO2, VO2max, temperature (body), temperature (water) |
| Miscellaneous | Temperature sensing, Depth gauge, Ultra Wideband, Emergency SOS via satellite | |
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Battery
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| Battery type | 486 mAh | 599 mAh |
| Charging | Wireless | |
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Misc
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| Colors | Black, Silver, Rainbow | Natural, Black |
| Models | M2424W1, M2425W1 | A3281, A3282 |
| Inside the box | ||
| Price | 140 USD | 900 USD |
| Xiaomi Watch S4: More information Choose another device | Apple Watch Ultra 3: More information Choose another device | |
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