NetWeight:83gSize:60＊60＊44mm(offstate)Speaker:Magneticallyshielded40mm/4Europe/2wattSpeakerOutputPower:2.5WRatedPower:2.0WFrequencyrange:100hz-20khzDegreeofsignaltonoise:≥80dBDeviation:≤1%Playbacktime:upto11hoursBatteryCapacity:300MAHChargevoltage:4.2V&plu***n;0.05VChargingtime:2.5hours)