ULTRA-BRIGHT TO KEEP YOU SAFE 240-degree wide angle visual design provides more visibility than any lights on the market. Whether you're running, walking with your dog, cycling, skateboarding or hiking, this tail light for bike is bright enough to draw drivers', cyclists', and other peoples' attention. And not run the risk of blinding people. Secured your safety and others.IPX4 WATERPROOF: Highly airtight construction, stronger waterproof. These tail lights are water resistant and durable. Micro-USB covers are firmly closed which makes the rear light possible to withstand types of weather when you are biking. Btw don't soak them into water. USB RECHARGEABLE: Comes with 2 USB cables, this rechargeable taillight can be charged by USB cable via computers, chargers or portable power bank. Save your money and time from buying and replacing batteries and being more economic. With the adoption of 330mAH lithiumion rechargeable battery, after fully charged this USB tail light can last for: 4hrs (steady Light) ,10hrs (slow flashing), 12hrs (SOS),8hrs(cycle flashing), perfect choice for cyclist who rides often EASY TO USE: Simply hook this LED tail light onto your belt, running gear, backpack, dog collars, harnesses, or clothing. Mount to your bicycle, helmet, skateboard, scooter, wheelchair, or anywhere you need. Solid silicone mount rubber strap designed with four openings, enable the taillight to fit around different sizes of handlebars and seat posts. Square plastic slot could be mounted in 2 different orientations (horizontal and vertical). Perfectly meet your need in different occasions. Package Content: Package includes 2 Bicycle Tail light , 2 USB cables, 2 Silicone Mounting Strap. Please feel free to contact us when you have any problem, we will solve the problem for you as soon as possible.Why Buy from Us? Product quality is ensured. Strict quality control and test are applied for every of our product. Truly bright make you visible even in daylight. Good for the safety of all human kind and wild life These 2PCS Pack bike rear lights are easy to mount; rubber strap is nice and flexible and makes it easy to install and remove Lighting options for solid, blinking or chasing. Great in drawing attention without being annoying USB Rechargeable, save your trouble in buying and changing battery Waterproof and Durable: These taillights are waterproof and durable. Micro-USB cover of the tail light is tightly closed, so it can withstand terrible weather when riding a bicycle even on rainy days, no more afraid of dark road! (Note: do not sink it in water) 4 Lighting Modes&Battery Life Steady Light, 4 hours Slow flashing, 10 hours SOS mode 12 hours Fast flashing, 8 hours Lightweight & Easy to Carry One touch with 4 different lighting modes according to your preference. Small volume, light weight, easy to carry. Perfect to use whether walking with a dog, cycling, skateboarding or hiking, this tail lamp is bright enough to catch the attention of drivers, cyclists and others. Protect the safety of you and your loved ones. Easy Installation Attach the mount to the bike frame or seatpost, press the removable clip, then slide the rear light into the mount. The bike rear light can be installed horizontally or vertically as desired. Convenient to Charge - 2 hours charging time - Automatic, fully charged cut-off system - Smart charging ensures longer battery life - Can be charged by computer, car charger, portable power bank, USB cable Versatile Usage Bicycle seatpost, helmet, backpack, Running belt, running gear, reflective vest, Dog collar, harness, skateboard, Scooter, stroller, wheelchair, etc. Enjoy wide usage of this rear bike light.