HEXOHM V3.0 ANODIZED . Specifications: Custom milled aluminum enclsoure Maximum wattage output: 180W Requires dual 18650 batteries Proprietary 510 that sits 1 sheet of paper above box to prevent atomizer scratches Proprietary 30A board Master on/off button Reverse polarity Low voltage cut off (3.0V) Max voltage: 6.0V 10 second fire limit Solid brass battery contacts Injection molded battery sled Voltage output range of 3.3V-6.0V