Help yourself be seen from over 600 feet away with this high quality Safety Bike Light and Blinker System. It easily mounts to your seat post and batteries, mounting bracket, wrench and screws are all INCLUDED in this great package deal! It folds shut when not in use to save batteries and has up to 50 hours of illumination time on one set of batteries. Comes with easy to follow instructions and an 800 number on the box for questions and comments.Features Include:Easily mounts to your seat postMounting bracket and batteries includedCan be seen from over 600 feetFolds shut when not in useLightweightAutomatic left and right turn signalsBright LED displayMeasures 16 x 10.75 x 5 inches