1: Standard 3.0, the United States Broadcom Bluetooth program
2: effective distance of 10 meters
3: Standby time: 100 days
4: continuous working time: 70 hours
5: Charging time: 4-5 hours
6: lithium battery capacity: 400mha
7: lithium battery life: 3 years
8: Key life: 500 million times
9: Features ultra-thin aluminum alloy panel, magnetic interface charging
10: Available colors: black, gold, pink, white