---[Best 360° Visibility] 200LM total front & rear lighting power through flood lenses from this Senticam bicycle helmet light gives unparalleled safety and up to 1km beam penetration in darkness. --- --- --- [Flexible Installation] Our bike helmet light comes with the simple Velcro strap installation system that fits almost all helmets and is even compatible with GoPro brackets for seamless switching between cycle helmet light and video accessories. --- --- --- [USB Rechargeable Helmet Light] Ultimate convenience with simple and quick charging from USB ports including on your computer, charger, or portable battery. Our helmet light only needs 2.5 hours to charge with up to 86 hours discharge time under front only 10LM fast flash.