Specification* Lumens: 100LM* Battery: 500mAh* Beads: Bright COB* Weight: 30g* Size: 88*19*30 mm* Charging: USB rechargeable(about 2hours)* Battery Indicator: Green, red* Running Time: 5-15 hours* Light Modes: Steady-Flash-StrobeFeatures:Ultra Bright to Keep You Safe: 260 degree wide angle visual design provides more visibility than other lights. What's more , the COB lamp beads produces super bright light to make this rear bike light can be seen from a good distance, which can enhance maximum your cycling safety.Wireless Remote Control: The remote control installed on handlebar allows you to switch the lighting modes by using the buttons on the wireless controller during riding. Perfect for use as bike tail light, a helmet light ,a caution light on a stroller or a camping light6 Light Modes & Waterproof: Turn left light, Turn right light, Brake light, Steady red light, Fast Flash, Flowing Light. Weather tight design ensures all condition use.USB Rechargeable: Stop Wasting Your Money and Never Buy Batteries. The bicycle tail light charges from your computer or any devices with USB port.Only takes 2 hours to fully charge but can work up to 12 hours in constant brightness mode.Easy to Install: Horizontal or Vertical Mounting, 360 rotation mountable cycling blinker installs and flexible detaches around any handlebars, seat post, frame or helmet in seconds with no tools required.