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Headphone
Bluetooth Series
KOGI-K11
Bluetooth Version: V4.2
Driver Unit:Φ40mm 
Impedance: 32Ω 
Sensitivity: 105 ±3dB 
Receiver Distance: Up to 10 meters 
Working Time: Up to 5 hours
Charging Time:2 hours
Support: TF/Micro-SD card
Battery:Rechargeble Lithium-battery(3.7V/400mAh)
ChargingUSB2.0

Clours:Black-blue, Black-red