Bluetooth Version: 5.0 Blueturn 5616
Battery inside earphone: 50mAh with protect PCB
Battery inside chargingcase: 400mAh with Protect PCB
Speaker: 10mm
Impedance: 32ohm
Frequency:20-20kHz
Sensitivity: 105dB+-3dB
Working time: 6-8hours
Standby time: 168hours
LED display in charging case
injection color: white or black
closed box