Thermo-chromatic - transforms from black to yellow under heat. Matching thermo-chromatic bag. Four temperature settings (475F-625F). Up to 35 cycles on one charge. 30-60 minutes for a full charge. 1 year warranty. Kit comes with: e-chamber dish, replacement filling tool, glass attachment, carb cap with seal loading tool, XS Kalifa Kush Limited Edition device and bag.