Wireless remote control allows you to turn on the corresponding lights according to road conditions for easy operation. Five light modes provide flexibility for different riding situations with simple, intuitive controls. Taillight and remote control included; other accessories shown in images are not included. 180-degree wide-angle lighting delivers high brightness for improved visibility and safer night riding. Integrated 120-decibel alert sound helps notify pedestrians and vehicles nearby. USB fast charging with silicone-sealed port ensures reliable waterproof and dustproof performance. Adjustable mounting angle for optimal positioning. Equipped with 14 red SMD LEDs and 18 yellow SMD LEDs on each side for enhanced rear visibility. Battery: 900mAh lithium-ion Charging time: Approximately 3 hours Voltage: 3.7V Material: ABS plastic Dimensions: Approx. 3.7 x 1.3 x 1 inch Color: Black Power source: USB rechargeable Package includes: 1 x Bicycle Taillight 1 x Remote Control