... 1, Executive standard: Bluetooth V3.0 2. Working distance: 10 meters 3, Modulation system: FHSS 2.4G 4, Transmitting power: Class ... , Charging current: 100MA 10, Standby time: 60days 11, Uninterrupted working time: 30 hours 12, Charging time: 4-4.5 hours 13, Lithium polymer battery Capacity ...