*  Bluetooth standard: Bluetooth v3.0
*  Modulation system: FHSS 2.4G
*  keys standard: 82 keys
* Working distance: 10m
* Transmitting power: Class 2
* Working voltage: 3.0 5.0 V
*  Working current:
* Standby current:
*  Sleeping current:
*  Charging current: ≥100 mA
*  Standby time: 55 days
* Uninterrupted working time: 55 hours
* Lithium-ion battery capacity: 160 mAh
*  Charging time: 4 - 4.5 hours
*  Key strength: 80± 10g
* Key life: 500 million strokes