The Squid Industries Double Barrel V3 is the newest version featuring the popular Double Barrel chassis. It's made from a high-quality alloy and has a 0.47" LCD screen. Dual high-amp 18650 batteries are loaded up via a hinged bottom-loaded battery door.Dimensions: 92mm x 43mm x 25mmWattage Output Range: 5-150WVariable Voltage KnobSuperior Stainless Steel Chassis ConstructionHinged Bottom-Loaded Battery Door0.47" OLED Display Screen - Top MountSingle Multi-Functional Operation Button - Voltage AdjustmentReverse Polarity ProtectionOverheat ProtectionShort Circuit Protection