1. we will DO NOT put any invoices, QR codes, promotions in the shipment, So Dont worry, Just buy it, we will do anything well for you.
2.We are guarantee each device be tested rigorous before shipped out, SO all products can guarantee 100% high quality before sent out.
If you have any questions, please feel free to contact customer service, we will solve it for you, please do not give bad reviews at will, thank you in advance.
Bluetooth 3.0: Standard MICR interface
charging time: < 2 hours
Within 10 meters:Actionable
Lithium battery capacity: 110MA
Continuous operation: 30 hours
Working voltage: 1.8~3.6V
Lithium battery life: 13 years
Operating current: <2.0M
Battery specification: 3.0*25*25MM
Standby current: 10.3-0.5MA
Button Force : 80 ± 10G
Sleep current: <40UA Key Life
Standby Time: =30 Days
Charging Current: ≥200MA
Operating temperature: -10-55 ℃