If you are looking for a professional rear light for your bike, you should take at this item. This bike tail light is made of , which enjoys the strong durability. With waterproof design, it can greatly meet your practical requirement, can be used in the rainy days. Features -Color: As shown. -Material: Plastic. -Size: About 6.10X3.50X2.40cm/2.40X1.38X0.94inch. -Waterproof grade: ipx4. -Power supply mode: USB power supply. -Five lighting modes, highlight battery life <= 5 hours, flashing battery life <= 10 hours. -Lightweight and portable. Easy to carry to where you need. Easy installation. -Made of high-end plastic material, it is sturdy and durable for a long time use. - Features the strong lighting mode, which provides you safe driving experience. -Great luminous effect, a great accessory to ensure your safety when riding at night. -The workmanship of this product is perfect, and you will have a good experience in using it. Package list: 1 x bike tail light 1 x fixing strap 1 x USB cable