Material: ABS+PC+silica gel+metal Version: V5.2 Communication distance: 10m Playtime: 25 hours (70% of the volume) Battery capacity: 170mAh/0.629Wh (earphones) Earphone rating input: DC5V⎓10 mA Earphone rating consumption current : 7 mA Charging time: about 1.5 hours Frequency response range: 20 Hz-20 kHz Charge interface: Micro-USB