There are 2 style for your to choose:#1 means Wire(WIth USB)#2 means Wireless BluetoothBluetooth support: V 3.0 +EDRRange: 10 metersTransmitting frequency: 2.4G HZPower supply: DC5V/100-120mABattery: 3.7V 400mAh lithiumCharging time: appro