Features: Make from Silicone, this light is enduring and stable, offering long terms performances without easily breaking or wearing out. The tail light of the little turtles bicycles adopts high brightness LED lamp beads, which bright enough to warn driver behind in a dark environment. waterproofs and dustproof design, which can work normally in various environment, whether it is rainy, cloud or sunny day, it can provide reliable light. The taillight can easily installed on the bicycles without any tool, and it is also easy to disassemble. Feature auto sensing, it adjusts to your environment, lighting bright light up signal that ensure maximums visible. Specifications: Component: Silicone Size: about 57x40x24mm/2.24x1.57x0.95inch Color: Green/Blue/Black Color/Pink/Yellow Battery: 1pc 2032 battery(not included) Package Includes: 1Pc LED Bicycles Light note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.