I am going to file this under the "why" category. Seriously, do we really need to mount a rear-view camera on a bike? How about a good old fashioned mirror, or even older fashioned, turn your freaking head and look.
Any-who, the Owl 360 Rear View Bike Camera ($180) consists of a CMOS camera you mount below your bike seat and a 3.5-inch LCD display for your handlebars. The rear view camera system is powered by a 3.7V lithium polymer battery and will provide about 5 hours of use per charge. The camera has ten LEDs around the lens for better low light viewing and rider safety.