Vocalism Principle: dynamic
Chip: SBC
Support protocol: HSP/HFP/A2DP/AVRCP...
Battery: bulit-in li-ion battery
Battery capacity: 80 mAh
Charging voltage current: DV5V, 80MA
Transmission radius distance: 10M
Music time: about 7 hours
Talk time: about 9 hours
Life time: about 90 days
Charging time: about 2 hours
Software language: English
Sensitivity: 110 dB
Impedance: 16 Ω
Speaker size: 10 mm
Frequency response range: 50-20K hz