E99/M99 WIRELESS NOISE CANCELLING HEADPHONE
Bluetooth: 5.4
Working Range: 10m
Speaker Diameter: 40 mm
Sensitivity:100+3dB
Frequency Response:20HZ-20KHZ
Impedance:32 ohm
Battery Voltage: 3.7V
Battery Capacity: 300 mAh
Charging Time: =2 H
Working Time: = 25 H
