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Sim Cards and Devices
Earphone
Model: ETE51Charging case model: ETE52
Audio Quality
Driver: φ12.4mm Dynamic UnitDriver sensitivity: 107dB @1KHzFrequency response range: 20~40KHzMicrophone sensitivity: -38dBV/Pa
Bluetooth®
Bluetooth® codec: LDAC/AAC/SBCBluetooth® version: Bluetooth® 5.3Bluetooth® range: 10m
Battery Life
Battery type: Rechargeable Lithium-ion BatteryBattery capacity: 43mAh (earbuds) / 440mAh (charging case)Communication time (50% volume): 7h (single charge) / 30h (with charging case)
Charging
Charging time*: 1.5H (earbuds) / 2H (earbuds + charging case)Charging input (charging case): 5V ⎓ 1ACharging output (charging case to earbuds): 5V ⎓ 0.2ACharging port: USB Type-C* The above specifications were obtained based on tests performed in OPPO laboratories. Charging times were tested in OPPO laboratories at a temperature of 25°C using an OPPO standard charger. The actual results may differ slightly depending on environmental factors and the charger used.
Water and dust resistance
Water resistance (earbuds): IP55
Size
Weight (earbuds): 4.3g±0.1gWeight (product): 47.3g±0.2gSize (earbuds): 33.01mm*20.3mm*23.15mmSize (package): 65.84mm*50.45mm*24.81mm
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