This is the camera system that mounts to a bicycle for providing a clear view of the road behind. The 2 1/4" W x 1 1/2" H camera mounts to a bicycle's seat post, provides a rear-facing 75º field of view ideal for seeing approaching vehicles or other cyclists. A 78 3/4" zip-tied cable that accommodates any frame geometry connects the camera to the handlebar-mounted 3 1/2" TFT color monitor (fits bars up to 1 1/4" diameter)