The Sigelei Kaos Spectrum is a unique high wattage temperature control box mod that is capable of firing up to 230 watts. The Sigelei Kaos Spectrum literally stands out from the rest with the unique color LED light that lights up when activated. The Sigelei Kaos Spectrum features temperature control modes supporting Nickel 200 (Ni200), Titanium (Ti) and Stainless Steel 304,316,317 (SS) coils. This device also features the preheat function. The Spectrum requires 2 x 18650 batteries (batteries sold separately).