Ascher USB Rechargeable Bike Light Set,Super Bright Front Headlight and Free Rear LED Bicycle Light,650mah Lithium Battery,4 Light Mode Options, Water Resistant IPX4(2 USB cables and 4 Strap Included) ADVANCED DESIGN: USB rechargeable light, built in 650mAh rechargeable lithium battery for each light. Water resistant rated to IPX4 - Protected against splashing water from any angle. FOUR LIGHT MODE OPTIONS: The Headlight and Taillight feature an one-touch switch with four different lighting modes depending on your preference. Include full brightness, half brightness, fast flashing and slow flashing. EASY INSTALLATION: The silicone mount straps are designed with two openings that tightly fit around many size seat posts, handlebars, seat risers, backpacks, helmets and stretch to keep lights secure and firm. They can be easily loosen and fasten, and no tools are required. MUTIFUNCTION: This bike light set is versatile enough for cycling, hiking, camping, or any outdoor activity and can be used as emergency flashlight. This is great for cycling at night or in places where visibility and safety are concern. So, just start your next adventure with us. 18 MONTHS WARRANTY: AscherDirect is the only authorized manufacturer to sell this Bike light set. Only this product sold by AscherDirect (and Fulfilled by Amazon) are guaranteed to be the top quality, with excellent customer service. We are dedicated to ensuring your 100% satisfaction, Please feel free to contact us when you have any problem, we will solve the problem for you as soon as possible. Head Light: 3.5hr (full brightness) ,10hrs (half brightness), 10.5hrs (slow flashing), 10hrs (fast flashing) Tail Light: 2.5hr (full brightness) ,9hrs (half brightness), 9.5hrs (slow flashing), 9hrs (fast flashing) Attach the micro USB cable to the Bike light&#039;s micro USB input port Insert the other end of the cable into either an AC adapter (not included ) connected to a wall socket or an active computer USB port The LED indicator of front light will turn to be green when the front light is fully charged and the rear light has an orange hue when finished 1 X Head light (white light) 1 X Tail light (red light) 2 X USB cables 4 X Silicone mounting Strap 1 X Instruction Manual