USB Fast Charging: They only need 1 hour to fully charge. There is a hidden USB charging port on the side of the device, which can be connected to a computer and other devices with a USB port for fast charging, avoiding unnecessary battery replacement. Easy to install and remove: It is installed by a highly elastic silicone mounting strap, which is very soft, easy to stretch, and can be easily loosened and fixed without tools. The light can be firmly fixed on the frame and backrest, suitable for all types of bicycles, very suitable for children and all cyclists. Lightweight/Sturdy/Waterproof: Bike Light set use PC plastic housing, so you don't have to worry about it being too heavy, it is suitable for both men and women. The USB interface is covered with waterproof and dustproof silica gel, combined with advanced IPX65 waterproof and dustproof technology, suitable for various weather conditions. It is ideal for team or long-distance cycling. SAFETY, DESIGN, POWER, SIMPLICITY AND INTELLIGENCE SAFETY AND SIMPLICITY Smart taillight: The taillights have a brake sensing function. When the taillight senses a brake deceleration, it will switch to the brake light mode. The taillights emit strong light. Improve the safety of cycling. USB charging: This is a USB charging light. It can be charged through a variety of USB devices. Smart induction taillight: In the slow flash mode and breathing light mode, turn on the taillight switch. If you are riding in a dark environment, the taillights will automatically turn on. Bicycle: suitable for all road bikes, mountain bikes, children's bikes, easy to install on handlebars, seat posts, helmets, etc. MULTIPLE APPLICATIONS ABSOLUTE SAFETY Bright red LEDs, for your safety. Waterproof Ipx 65 Taillight, the rain doesn't stop you! Easy and quick installation without tools, for all types of bikes. It also serves as a helmet light, backpack light or safety light, wherever you are. EASY INSTALLATION GUARANTEED VISIBILITY MULTIPLE USES OPTIMIZED BRIGHTNESS; EASY INSTALLATION FITS EVERY BIKE INSTALLS IN SECONDS without tools for any type of bike, road bike, mountain bike, hybrid or transport bike. GUARANTEED VISIBILITY THANKS TO THE POWER OF THE LED, YOU WILL BE VISIBLE FROM A FAR AWAY AND YOUR SAFETY WILL BE ENSURED MULTIFUNCTIONAL HIKING YOU CAN USE THE LED LIGHT DURING YOUR HIKES BY APPLYING IT TO YOUR BAG TO BE SEEN AND LOCATED OPTIMIZED BRIGHTNESS THANKS TO ITS SMART TECHNOLOGY, THE LIGHT OF THE REAR LIGHT ADAPTS TO THE LIGHTNESS OF ENVIRONMENTAL