ModelA2 (Waterproof IPX 4)Version Bluetooth 3.0+EDRBattery CapacityBuilt-in 3.7V(USB)600 mAh lithium batteryPlaying TimeOver 6 hoursTransmission DistanceOver 10 meterOutput Power3W,Impedance 4 ΩCompaticableBluetooth audio input,handsfree for phone speaker,fit for iPhone/iPad and all bluetooth supported mobile phones,mp3,TF card ect.When it connect your phone,it can control your phone camera ...