Feature: 1. The warning light will light up automatically when walking in the corridor or at night. 2. Light brake, EmergencyBrake, slow down light instantly highlight. 3. Remind the surrounding people and car in an all-round way to protects the safety of yourself and others. 4. Press the bell button of the remote control of the handlebar to remind the people and car around to avoids. 5. When you want to turn, press the left / right turn button to give out light steering prompt similar to a car. 6. When in a guarded state, such as touching or tapping a bicycle, the light will sound a warning sound for 2 seconds, if touched or knocked again within 2 to 12 seconds, the light will sound for 30 seconds, continuously warning and deterring thieves(multiple sound effects cycle). 7. PC and UVresistant material, waterproof and dustproof, high and low temperature resistance, not afraid of wind and rain. Specification: The bike tail light makes your riding safer. Bright rear light enhances your visibility for night riding even daytime riding, bicycle turn signals let drivers know the direction you will ride, auto brake light alerts other drivers behind you, 110 dB bike horn to alert drivers you are coming, bike alarm provides additional safety and deters thieves effectively when your bike stopped at home or outdoors. Multifunctions allows you to save more space on your bike and cost-saving. Features: The warning light will light up automatically when walking in the corridor or at night. Light brake, EmergencyBrake, slow down light instantly highlight. Remind the surrounding people and car in an all-round way to protects the safety of yourself and others. Press the bell button of the remote control of the handlebar to remind the people and car around to avoids. When you want to turn, press the left / right turn button to give out light steering prompt similar to a car. When in a guarded state, such as touching or tapping a bicycle, the light will sound a warning sound for 2 seconds, if touched or knocked again within 2 to 12 seconds, the light will sound for 30 seconds, continuously warning and deterring thieves(multiple sound effects cycle). PC and UVresistant material, waterproof and dustproof, high and low temperature resistance, not afraid of wind and rain. Specifications: Item color: black Light color: red+yellow Waterproof: IP65 Light battery: 3.7V, 2200mAh Remote controller battery: 1 * CR2032 Remote distance: 30-60m Frequency: 433.92MHz Light size: 125 * 97 * 33mm / 4.9 * 3.8 * 1.3in Package size: 135 * 86 * 65mm / 5.3 * 3.4 * 2.6in Package weight: 270g / 9.5ounce Packing List: 1 * Bike Tail Light 1 * USB Cable 1 * Bracket Package List: 1 * Bike Tail Light 1 * USB Cable 1 * Bracket