Product Description Multi Modes Headlight with 2 modes: Steady on (runtime 7hours )â€”> Blueish dim light modes ( 20 hours). Taillight with 2 modes: Steady on( 4 hours )â€”> OFF, accessible by one click. Blueish Dim Warning Light This mode is for warning use, when you want to stop the bike to do other things, just switch to blueish dim light mode to make you be seen easier by around motorist, increase your safety. Free Taillight Include This rechargeable rear light with 220Â°lighting angle provides good visibility, ensuring drivers are aware of where you are. It also can be used for safety light, clip on to your belt, pockets, backpack, helmet and so on. Low Battery Reminder Headlight: when the power remaining 20%, ON/OFF button will light up blue light to remind you to charge in time, and turn green when the charge is complete. Taillight: when the power remaining 25%, the taillight will light up blue light to remind you to charge in time, and turn green when the charge is complete. Waterproof With the waterproof rate of IPX4, both of the headlight and taillight can be protected against splashing water from any angles, it means that you can use the lights to ride in rain and snow day. Easy Installation Screw the mount on handlebar, hold quick-release clip and slide the bike light on mount. Versatile Usage The bike light set comes with quick release adjustable mounts for easy installation fits on most bike handlebars, and the headlight is also compact enough to use as a standalone flashlight for emergency use. Stable Remain securely locked in position, even during off-road use.