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ANC Series
BT Headphone

Bluetooth Version: V4.2
Receiver Distance: Up to 10 meters 
Play Time: Up to 10 hours
Frequency Response: 20Hz-20kHz 
Charging Time: 2-3 hours
Charging Voltage:DC 5V
Active Cancellation:Up to 22dB
Sensitivity: 105 ±3dB 
Support: TF/Micro-SD card
Battery Voltage: 400mAh
Functions:Bluetooth, Calling, Active Noise Canceling, AUX, USB, Sensitivity Microphone, Volume Control, etc.