Description: 【Premium Material】Bike Rear Light is made of ABS material, which is reliable and sturdy. It is IPX7 sealed and waterproof, and can be used in rainy weather. 【Small and Portable】The size of Light is 8.7cmx6cmx1.85cm/3.43inchx2.36inchx0.73inch. Small size, does not take up space, easy to carry, can be easily put into your pocket 【Bicycle Light】Blue, white and red three color warning light, 7 adjustable modes, high brightness COB lamp beads, intelligent light control, automatically light up at night. 【Easy to Install】Mountain bike taillight is easy to install, convenient and fast. Universal, suitable for most bicycles and mountain bikes 【Night Cycling Accessories】Bicycle Taillight is an ideal gift option for cycling enthusiasts, suitable for night riding Specification: Material: ABS Size Chart: 8.7cmx6cmx1.85cm/3.43inchx2.36inchx0.73inch Package Includes: 1 Bike Taillight(3 Pack) Note: Please allow slightly errors 1-2cm differences due to manual measurement.