The 3-Led rear bicycle light provides bright LED light to ensure that you will be seen by cars coming up from behind for as far as one mile away. Users rave about the exceptional brightness of this powerful little light as well as its long battery life. The light features steady or blinking modes and will run on two AAA batteries.Super convenient and easy to use easy to install and unload the light is small enough to fit into a pocket or small bag if you need to take it with you. Altogether the tailight is an economical choice that offers long-lasting visibility for night riding and lots of convenience. 3 Types of Lighting mode Light weight Easy to hold on the bike