Super Bright: the white headlight select Samsung LED chip which the system adopts high-efficiency constant current circuit design, intelligent low-voltage protection, supporting 350Lumin, brighter than others.High Efficiency Recharging : The bicycle lights set built in rechargeable lithium battery, only takes 1 hour to fully charge, and the maximum usage time in low-power mode is 10hours(headlight),or 12 hours(back light), Low Battery Reminder Function has be provided.4 Mode and 6 Mode Options:The bicycle lights set feature one-touch switch, and front light provide 4 different lighting modes and taillight provide 6 mode to select. And support mode memory, you can keep your favorite mode easily.Waterproof: Make of IPX5 waterproof material, meanwhile, the USB charging port is also be protected by waterproof rubber cover. What's more, it weighs only 22g each and only 30*27.5*47mm in size, light weight and portable, easy to install and easy to carry.Great Value: The silicone mount straps tightly fit around many size seat posts, handlebars, seat risers, backpacks, helmets and stretch to keep lights secure and firm, Will not be shaken off on any curved road. This bike light set is versatile enough for cycling, hiking, camping, or any outdoor activity and can be used as emergency flashlight. It is great for cycling at night or in places where visibility and safety are concern.