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Bluetooth Series
Bluetooth version: 5.0
Driver Unit: Φ40mm 
Impedance: 32Ω 
Sensitivity: 105 ±3dB 
Frequency Response: 20Hz-20kHz 
Receiver Distance: Up to 10 meters
Rechargeble Lithium-battery(3.7V/180mAh)
Music/Talk Time: Up to 6 hours 
Charging: USB 2.0
Charging Time: 2 hours
Features: Bluetooth, Sensitivity Microphone , 
Volume control, Switch songs, Answer/Reject call, 
Hung up  phone, Redial,Battery status, AUX
Colours: Black red, Black white, Black gold, Black rose