Earphone
Model: ETE31Charging case model: ETE32
Audio quality
Driver: ?13.4mm Dynamic UnitDriver sensitivity: 125�3dB @1KHzFrequency response range: 20~20KHzMicrophone sensitivity: -38dBV/Pa
Bluetooth�
Bluetooth� codec: AAC/SBC (music), CVSD/MSBC (conversation)Bluetooth� version: BT5.3Bluetooth� range: 10m
Battery Life
Battery type: Rechargeable Lithium-ion BatteryBattery capacity: 27mAh (earbuds) / 300mAh (charging case)Communication time (50% volume): 6h (single charge) / 25h (with charging case)
Charging
Charging time*: 1.2H (earbuds) / 2H (earbuds + charging case)Charging input (charging case): 5V ? 1ACharging output (charging case to earbuds): 5V ? 400mACharging 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): IP54
Size
Weight (earbuds): 3.7g�0.1gWeight (product): 37.4g�0.2gSize (earbuds): 33.1mm*18.45mm*17.10mmSize (package): 56.55mm*51.6mm*26mm