The Sigelei Kaos Spectrum 230W Mod More then just a normal high wattage device. The Spectrum's signature feature is the 6-Color LED belt which wraps the screen along the front face of the device. Users have the ability to choose from six colors through a user interface to produce a completely eye catching unit in both day or night. The LED strip wraps around the large 0.96 inch color display. The Spectrum requires two 18650 batteries (batteries sold separately) which can be replaced though the hinged battery door located on the underside of the device. Integrated with Sigelei's precise technology in temperature control and raw high wattage power, the Spectrum impressively provides a wide dynamic in terms of quality, performance, and pleasing aesthetics to light its way to the top of its platform.