Super Bright 30 LEDs, Super Long Battery Life- Very bright 12 LED red lights and 18 LED yellow lights; The eye-catching red tail light also allows other road users to see themselves no matter day or night. You can install and remove the light in seconds, whether on steep or uneven roads, the LED bicycle light will stick to the frame and will not shake or fall off, ensuring your safety and reliability. [Wireless Control and Turning Light] - Turn on the tail light button for remote control, 5 modes: red light - red light flashing - full flash (red and yellow light) - left flash + beep - right flash + beep; You can Switch different modes according to your needs and different occasions to get the best lighting experience. USB Rechargeable and Waterproof-The tail light has a built-in 900mAh polymer battery, which can be used for more than 5 hours (low mode). The bicycle tail light can be charged and used by a computer, power bank, wall socket or any device with a USB port. Micro-USB cable included. Overall waterproof design, rainy weather will not affect use (make sure the USB port is closed) 110 dB Beep & Versatility- This tail light and 110 dB beep will definitely remind pedestrians that it is safer to ride at night when turning on the turn signal. Lightweight and durable bicycle tail light that attaches to any bike, kids bike, adult bike, handlebars, seat post, dog collar or anywhere. It can also be used as a helmet light, backpack light, warning light, etc. Packaging list: 1* car bell Note: 1. Please allow some errors due to manual measurement. Please make sure you don't mind before bidding. 2. Due to different monitors, colors may vary, please understand.