Earphone Type: In-ear True WirelessModel (earphones): ETE01Model (charging case): ETE02 Audio quality Driver: φ11 mm dynamic driver + φ6 mm planar diaphragm driverSpeaker sensitivity: 118dB @1kHzFrequency response range: 20Hz ~ 40kHzAudio codec: LHDC / AAC / SBC Noise cancellationNoise control modes: Smart Noise Cancellation / Max Noise Cancellation / Moderate Noise Cancellation / Mild Noise Cancellation / Transparency / Vocal Enhancement / Noise Cancellation Off Call Noise Cancellation: Triple-Microphone With Bone Voiceprint AI Call Noise ReductionMicrophone sensitivity: -38 dBV/Pa Bluetooth®Binaural Low-Latency Bluetooth® Transmission: SupportedBluetooth® version: BT 5.2Effective Bluetooth® range: 10 m Battery Life Battery type: Rechargeable lithium-ion batteryBattery capacity: 57 mAh(earphones)/ 566 mAh(charging case)Music play time (LHDC, Default setting, 50% volume)*: Max Noise Cancellation: 5 h (single charge) / 20 h (with charging case)，Noise Cancellation Off: 6.5 h (single charge) / 27 h (with charging case)Music play time (AAC, Default setting, 50% volume)*: Max Noise Cancellation: 5.5 h (single charge), 22 h (with charging case), Noise Cancellation Off: 9.5 h (single charge), 40 h (with charging case) Charging and play time data is based on OPPO laboratory testing conducted in a 25℃ environment with a standard OPPO charger. Actual charging and play time will vary according to the specific environment and charger used. ChargingCable Charge Time*: 60 min (earphones) | 90 min（charging case）Charging port: USB Type-CCharging input (charging case): 5 V ⎓ 2 ACharging output (earphones): 5V ⎓ 400mAWireless charger: Qi wireless charging supported SizeWeight (each ear): 4.7g(±0.2g)Weight (charging case): 47g(±1g)Weight (entire device): 56.4g(±1g)Charging case size (length * width * thickness): 66*49.3*22.7 mm Water and dust resistanceWater and dust resistance - Earphone: IP54
