Description:
1. Built-in 500MAH polymer lithium battery
2. Remote control battery: button battery CR2016 3V / three (subject to the actual remote control model)
3. The main battery is continuously charged and discharged up to 500 times (normal temperature)
4. Host size: 93x45x19 mm
5. Remote control size: 70x32x20 mm
6. Alarm sound, test distance 10 cm up to 100 decibels