Bike alarm integrated with a rear light. The device protects against bicycle theft and significantly increases road safety. Specifications: Brake Light Lamp – 4 Lighting Modes Anti-Theft Alarm Bell Automatic Light Activation When Riding in the Dark 3 Volume Levels 7 Sensitivity Levels for Alarm Remote Control Range: 10-50m Alarm Volume: 110dB Power Supply: Alarm - 700mAh Battery 3.7V, pilot - 27A(12V) Operating frequency: 433.92MHz Degree of protection IP65 Operating temperature: -40+70°C.Two adapters for mounting on a seat post and a flat surface. Product packaged in plastic wrapping, ready for shipping.