Smart remote control turn signal with multiple lighting modes for various riding conditions. High brightness rear light with horn function helps alert pedestrians and vehicles, enhancing night riding safety.Features: High Brightness: Utilizes high-lumen LED beads to increase visibility and improve safety during nighttime rides. Easy to Control: Wireless remote control allows convenient operation of lights and turn signals according to road conditions. Multiple Lighting Modes: Offers 5 modes including left and right turn signals, steady red light, flashing red light, and full strobe mode. Long Endurance: Built-in 900mAh rechargeable lithium battery provides long runtime. USB charging supported. Water-resistant and dust-resistant with silicone sealing. Wide Application: Easy to install and remove, compatible with mountain bikes, road bikes, and city bikes. Equipped with a loud horn to alert others.Specifications: Color: Black Material: ABS Light Source: LED Battery: Built-in 900mAh Lithium Battery Charging Time: 3 Hours Item Size: 94 x 32.5 x 26mm / 3.7 x 1.3 x 1.0in Item Weight: 54g / 1.9oz Package Size: 120 x 35 x 30mm / 4.7 x 1.4 x 1.2in Package Weight: 78g / 2.8oz Packing List: 1 x Bike Light 1 x Remote Control 1 x USB Cable