Description: Bike Rear Light: This is a LED bicycle tail light, an essential accessory for your cycling gear, enhancing safe during your rides.Feature: The USB bicycle tail light is compact, portable, and convenient to operate. Waterproof design, easy to install and remove.Multiple Light Modes: The bike warning lamp features different light modes: bright light, quick flashing, flowing, and weak light, allowing you to adjust according to the visibility conditions and personal preference.Premium Material: Made from PP, this tail light is designed to withstand the rigors of outdoor use and last for a long time.Size: With bike rear light size of 8.5cmx3.2cm/3.35inchx1.26inch, this bicycle tail light is compact and lightweight, making it easy to install and carry around on all your biking trips. Specification: Material: PP Size Chart: 8.5cmx3.2cm/3.35inchx1.26inchLight pole length:6.5cm/2.56inch Package Includes: 1 Bike Rear Light Note: Please allow slightly errors due to manual measurement and different monitors.