Product Featire :
1. Model No: BT-90
2. Standard Micro USB Charger
3. Available usage within 10 meter
4. Modulation System : GFSK
5. Working Voltage : 3.0-4.2V
6. Working Current : 7.Standby Current : 8. Sleeping Current : 9. Charging Current : >200mA
10. Standby : > 100 day
11. Charging Time : < 2 hour
12. Lithium Battery Capacity : 110mA
13. Sustainable Working Hour : > 40 hour
14. Lithium Battery Life : 3 year
15. Lithium Battery Size : 3.0*23*23cm
16. Force to Key : 60 +/-10g
17. Key Life : 300 million click
18. Working Temperature : -10 to +55 degree