Made of high-quality materials, this warning light is durable and practical. Bright lights keep you safe when running at night. You can use it for a long time. One of the must-have items for you. Easy to install and remove. It will alert the driver behind you. feature - color: red. - Material: ABS. - Dimensions: 5.8 x 3.2 x 1.5 cm \/ 2.28 x 1.26 x 0.59 inches. - Powered by 2 AAA batteries, not included. - Simple and convenient to use, portable and durable. - Tie it around your arm or leg. - Keeps you safe while walking, running, cycling or doing other outdoor sports at night. - You can clip it to hats, pockets, running belts, travel belts, Anywhere like running vests etc. - Bright LED lighting keeps motorists, other pedestrians and cyclists always visible. 2 LED security lights