The gloworm cx urban light set is a dual optic light that you can switch the optics to run how you want using either spotspot spotwide or widewide optics and the light can be programmed to adjust the output of the light the cx urban can also be used as a piggy back charger for your phone or other electronic devices using an optional lightning micro or mini cable purchased separately and the light can be charged either via a usb cable on the mains or via a cycle dynamo charger