Xiaomi Redmi Watch 4 Obsidian Black
Technology | No cellular connectivity |
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2G Bands | N/A |
3G Bands | N/A |
4G Bands | N/A |
Speed | No |
GPRS | No |
EDGE | No |
Dimensions | 47.6 x 41.1 x 10.5 mm (1.87 x 1.62 x 0.41 in) |
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Weight | 31.5 g (1.13 oz) |
Build | Plastic back, aluminum frame |
SIM | No Waterproof (5ATM) 50m water resistant |
Type | AMOLED, 600 nits (peak) |
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Size | 1.97 inches |
Resolution | 450 x 390 pixels (~302 ppi density) Always-on display |
OS | HyperOS |
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Card Slot | No |
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Internal | Unspecified storage |
Loudspeaker | Yes |
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3.5mm Jack | No |
WLAN | No |
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Bluetooth | 5.3, A2DP, LE |
Positioning | GPS, GLONASS, GALILEO, BDS, QZSS |
NFC | Yes (market/region dependent) |
Radio | No |
USB | No |
Sensors | Accelerometer, heart rate, compass, gyro, SpO2 |
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Type | Li-Po 470 mAh, non-removable |
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