About this item : Super-bright so that you can easily see at night | Switch between the 4 lighting modes of high/low brightness for static lighting or fast/slow speed for flashing lighting so that you can easily be seen at night , -, : 750mAh battery (3x bigger than the whole market) | Lasts over 12 hours on a full charge | 0% - 100% in just 3 hours | The lights also come equipped with auto cut off circuits to prevent overcharging | Batteries are rigorously tested before being put into the lights to ensure durability - : Built with the highest quality materials to ensure that these lights can withstand extremely rough use like surviving through multiple 12-foot drops and staying under muddy water for over 12 hours and yes, we did test our lights like that -- : No tools required | Mounts and unmounts within 2 seconds | Mounting strap is used to mount the bike light onto things that have thick surfaces like handle bar, seatpost, seat riser, etc. | Mounting clip is used to mount the bike light onto things that have thin surfaces like backpack, jacket, shoes, etc. : RoHS compliant | REACH compliant | ISO 9001:2015 certified