Bicycle Smart Taillight Anti-theft Alarm Brake Warning Light 1. Waterproof and dustproof level: IP65 2. Charging interface: USB Type-C 3. Battery capacity: 3.7V 700mAh 4. Remote control distance: 30~70 meters 5. Transmitting and receiving frequency: 433.92MHz 6. Remote control battery: - WLO3C: 1 27A (12V) alkaline battery, daily use 1~2 years (remote control 5 times a day) - WLO9C: 1 CR2032 (3V) button battery, daily use 2~4 years (remote control 5 times a day) 8. Daily use 1~3 months, continuous standby for about 6 months, constant light 16 hours, flashing 65 hours 9. The host is fully charged in 2~3 hours, and the standby is about 4~8 months 10. When the host power is less than 15, a low-power reminder sound will be played to remind you to charge in time 11. Adapt to various harsh environments, waterproof and dustproof, sun-proof and drop-proof 12. Anti-theft alarm, 110dB volume, three-dimensional sensor, 360-degree all-round sensing 13. PCB high-gain antenna, long wireless remote control distance, remote control distance in open areas up to 30-70 meters, 3 kinds of electric bell tones, convenient for finding the car in the parking lot 14. Tail light size: 75x57mm 15. Remote control size: 03C 32x61mm, 09C 35x65mm