Alarm: USB Charging.
Sound Decibel: 115 dB.
Remote Control Distance: 0-80M.
Waterproof Level: IPX5 Waterproof.
Material: PC Plastic + Engineering ABS.
Remote Control Battery:12V/27A Alkaline Battery.
Alarm Battery Capacity:400mAh(3.7V)lithium Battery.
Applicable models: Applicable to bicycles, electric bicycles, electric vehicles, motorcycles, outdoor camping equipment and personal safety protection.