The Rev GTS Mod is made of all metal and its corners and edges are well rounded giving it a very smooth and comfortable hand feel. The battery compartment cover has a finely engraved pattern on it and it is closely connected to the mod by three magnets. Rev GTS 230w box mod is powered by dual 18650 batteries (not included). The 510 thread on it is spring-loaded and has a32mm width. This mod features several heat emission holes to make sure it does not become too hot whilst in use. The Rev GTS has a big HD screen displaying two speedometer-like dial plates. The upper one indicates the wattage and the one below indicates the puff time.