Funnyway(TM)Ultra Bright USB Rechargeable Bike Rear Light Waterproof Cree Bicycle Helmet Light Bicycle Tail lamp Safety Light(Black) USB Rechargeable bike light: This bike light only takes 2.5 hours to fully charge. More environment friendly. High Quality Materials: Build with ABS+PC, Aluminium alloy, more practical and durable. Water resistant in some degree to prevent the electronic components damaged. Easy To Install with No Tools: Tie Bars in the bike with the silicone strap. Just press the lens to power on with 3 modes: High, Low, Strobe. Cute and bright: 180 Degree visibility and long distance for the illumination and caution light in the dark. -