The Wulf Duo Portable Concentrate Vaporizer by Wulf Mods is an innovative vape pen that delivers maximum flavor from your oils and concentrates. You will appreciate the power and versatility of this quality vape that includes four variable voltage settings that will allow you complete control over your vaping experience. This rig also utilizes a dual quartz heating element for precision heating of your oils and to help maintain optional flavor. The Wulf Duos size is it not reflective of its power. This is a serious vaporizer powered by an internal 1000 mAh Li-polymer battery. a single charge lasts many dab sessions.