This multi-functional model enhances safety and security, making it ideal for a wide range of uses, from commuting and going to school to riding at night. 【Multi-Functionality】 ① Brake Lamp Function The built-in gravity sensor automatically activates the lamp when deceleration or braking is detected. This increases visibility from behind, contributing to improved safety. ② Tail Lamp Function Equipped with multiple lighting patterns, including solid and flashing modes. You can switch between patterns to suit your riding situation or preference. ③ Anti-Theft Alarm Function When the bicycle is subjected to vibration, a loud 115dB alarm is triggered. This provides peace of mind as a theft deterrent when parked. ④ Electronic Buzzer Function The electronic buzzer can be activated via the wireless remote control, making it convenient for alerting those around you and signaling your presence. USB Type-C rechargeable, eliminating the need for battery replacement. IPX5 waterproof specification allows for use even in rainy conditions. 【Product Condition】Brand new, unused 【Colors】Black / Red 【Accessories】Tail lamp body, wireless remote control 【Specifications】Type-C rechargeable / IPX5 waterproof