Rroducts Detail: Light Modes Monochrome light level: 6 light modes Two-color light levels: 5 light modes Battery: 500 mAh Water proof: IPX-5 Charging: USB charging Charging time:About 2 hours Note: If you want to turn off the light, long press the button. Due to manual measurement, please allow slight differences on size. There might have slight color differences due to different displays. Cycling Safe Bicycle Tail Light Lighting Mode Display Red Light White Light Red White Light Red Blue Light Universal Mounting Mounts in seconds and can be used on: road bikes, mountain bikes, kid's bikes and more. One Touch Dismount:Simply slide the LED light on off the mount. Easy Attaching No tools required:Place mount on the bar. Adjust strap to desired size and ride away. USB Rechargeable Connected to USB cable, which can be charged by computer, power bank or other electronic equipment with USB interface, 2hours are enough to fully charge the light, then the bike tail light is durable for a long time use. (Red light:Charging;Green light: Fully charged) IPX-5Water Resistant Which allows people to use the light in rainy days or snowy days; The light provides the same illumination in both unsatisfactory weather and common condition. Ultra-Brightness Keep You Visible and Safe at Night Wide range of applications The bicycle taillights can be installed on bicycle frames, belts, reflective vests, backpacks, dog collars or other suitable places, suitable for bicycles, skateboards, scooters, wheelchairs, etc.