Enhanced security and visibility: Equip your bike with our bike alarm, which can deter thieves with its loud 115dB alarm. Brake sensing technology ensures that the light brightens when you brake, alerting drivers and pedestrians behind you. Waterproof design: Designed to withstand adverse weather conditions, this rugged alarm is completely waterproof, ensuring reliable performance in rain or shine. Remote control operation: The convenient remote control allows you to easily set and disarm the alarm, enhancing user experience and convenience. Versatile compatibility: This alarm is suitable for both bicycles and motorcycles, offering a flexible security solution and peace of mind wherever you park. Battery: 3.7V 700mAh lithium battery, providing working time of approximately 13 months and standby time of up to 6 months. Charging port: Standard USB-C 5V (some quick chargers may not be compatible). Working frequency: 433.92MHz Waterproof rating: IP65 (dustproof and protected against water jets) Operating temperature: -40C to +70C Operating humidity: Less than 80% Storage temperature: -40C to +70C Color: As shown Material: Plastic Package contents: 1 Alarm 2 Remote controls 1 USB cable Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement may vary by 13 cm.