Moon Comet-X Pro Rear LED LightMoon Comet X Pro Rear LED Light The Moon Comet X Pro rear light is the latest version of Moon's long running Comet light line. It has been designed for everyday use, with an integrated high output COB LED. The Comet X Pro is USB rechargeable and comes supplied with a variety of brackets so it can be mounted in a range of different positions on your bike. The Moon Comet X Pro comes with 7 different modes and a 220 degree beam angle for great side on