AOVape will be leading the catridge battery industry with the cRoll. Its 3 temperature battery made of quality material. Its made of sturdy powder coated metal. Unique modern design thats comes in 4 colors Grey, Purple, Red, and Blue. The cRoll comes with 2 510 thread attachments, 1 lanyard, and a charging cable. It features a 10w,15w, and 20w temperature. It also has a 2 click preheat system. The cRoll also has a double window where the magnetic cartridge is to see where your cartridge level is at. I havent put mine down since i recieved mine. Holds a decent charge, and charges fast. The AoVape cRoll is by far a superior battery, and i Alan”420″ fully recommend it!!!