This item will project safety light signal at the back of your bike + 2 laser beams that will appear on each side of your bike to form a lane that will help you being seen in the dark. Handlebar fixation system to install underneath your seat. - 3 modes (continuous light / Flashing light 1 / Flashing light 2 - Powered with 2 disposable batteries (LR03 - AAA) - not included.