1: standard Bluetooth version 3.0
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: 200mha
7: Lithium battery life: 3 years
8: for Microsoft / Apple / Android
9: Available colors: gold， silver