KOGI-A1

Bluetooth Version: V5.0
Driver UnitΦ40mm 
Impedance: 32Ω 
Sensitivity: 105 ±3dB 
Frequency Response20Hz-20kHz
Receiver Distance: Up to 20 meters 
Working Time: Up to 7 hours
ChargingUSB 2.0
Battery:Rechargeble Lithium-battery(3.7V/180mAh)
Features:Bluetooth, Calling, Sensitivity Microphone

Colour: Blue, Purple, Pink, Black