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Basic Information
Product Name : OPPO Enco Air4 True Wireless Noise Cancelling Earbuds
Colorways : Silky white, Fresh mint
Chipset : BES
Earbuds Model : ETEE1
Charging Case Model : ETEE1

Noise Cancellation
: Up to 32dB Adaptive Noise Cancellation
: Transparency Mode

Audio
Driver : 12.4 mm dynamic driver
Driver Sensitivity : 112+3dB
Frequency Response : 20 Hz- 20 kHz
Microphone Sensitivity : -38 dBV/Pa
Microphones : 2 Mics per side

Bluetooth
Bluetooth Codec : AAC/SBC
Bluetooth Version : Bluetooth 5.4
Bluetooth Range : 10 m

Connection
Google Fast Pair : Support
Dual connection : Support

Battery
Battery Type : Rechargeable Li-ion Cell
Battery Capacity : 58 mAh (Earbuds) / 440 mAh (Charging Case)
Music Playback : [AAC, 50% Volume]
ANC OFF: 12h (Earbuds) / 43h (Earbuds+Case)
ANC ON / Transparency mode : 8h (Earbuds)/ 28h (Earbuds+Case)

Charging
Charging interface : USB Type-C
Fast-charging : 10 mins for 4 hours (Earbuds, 50%volume, AAC, ANC OFF)
10 mins for 11 hours (Charging case + earbuds combined,
50%volume, AAC, ANC OFF)
Charging time : 60min (Earbuds)/ 80min (Earbuds +Charging Case)
Charging input : 60min (Earbuds)/ 80min (Earbuds +Charging Case)
Charging output : 5V--0.4A (charging case to earbuds)

Dust & Water Resistance
Earbuds : IP55

Weight & Size
Earbuds Size : 29.99mm_20.30mm_23.87mm
Weight Earbuds : 4.2g
Case Size : 66.60mm_51.24mm_24.83mm
Weight Earbuds & Cases : 46.2g

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