Speakers/Audio:40mm/7.1 Surround Sound/Active Noise Cancelation
Impedance: 20Ω±15%
Battery Capacity: 1000MAH
Battery Type: Polymer Li-Battery
Working Duration: 20 hours
Charging Time: 3 hours
Charging Voltage: DC5V---1A
Working Voltage: 3.7V
Mic Direction: Omni Directional
Mic Sensitivity: -42db ±3db
Transmission Distance: 10meters
Low Latency: <25MS (2.4G mode)