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Bluetooth:V4.0
Transmission distance:10-15 meters
Transmission Frequency:2.402-2.480GHz
input voltage:3.5V-4.2V
Battery:Polymer Battery | 55mAH
Charging time:1-2h
Standby time:55h
System:Android,support ios
Shell material:Transparent PC
Bluetooth sunglass
Joining Free Technology Co, . Ltd
Smart Watch, Smart Band, Bluetooth Watch,
