USB Rechargeable Waterproof LED Lights for Bike Built tough, durable, and reliable, I've used them myself every day for years and so I can confidently recommend them to you. Front White Light Lumen High Brightness: 300LM. Lighting Distance: 30-50meters at night. Full light, 3-5 hours , Half light, 5-7 Hours , 12 hours blinking. 800MAH built-in lithium battery to ensure long-term power supply Size: 6.5*2.8*3.5cm Package Contain: Front White Light, Light Mount, USB Cable. Rear Red And White Light O-Ring straps which are secure the light to the frame with no brackets or tools needed. Two O-Ring Mounts - Natural Rubber - Sizes 30mm & 40mm. On/Off: Press the button on the light for 3-5 seconds to switch on/off the light . Battery Unit contains Auto Charging Cut Off when battery full, with charging light indicator built in. Charging: Full Charge - 2 Hours. 1st Mode (hold 1 second) - Cylon Wave - Up to 8 hours. 2nd Mode - Intermittent - Up to 14-16 hours. 3rd Mode - Flashy Flash - Up to 12 Hours. 4th Mode - Continuous - Up to 3 Hours. 5th Mode - Off - Press Button 1 Second for 1st Mode. Size: 7.5 * 3.3 * 2 CM Package contain: a LED Light, 2 Straps, USB Cable.