1.      Bluetooth 2.0 interface standard

2.      Operating Distance to 10 meters.

3.      Modulation System: GFSK

4.      Operating Voltage:3.0-5.0V

5.      Standby Time:60 days

6.      Charging Time:4-5hours

7.      Lithium Battery Capacity:160mA

8.      Uninterrupted Working Time:55 hours