Enjoy vaping oil concentrates? How about e-liquids? Well, the "Slim" Oil Vape Pen can do both! Produced by The Kind Pen, this portable vaporizer has a wickless chamber that can be filled with either e-liquid or oil. Make sure not to put any sticky or viscous substances within the chamber, as it is only capable of vaping more liquefied material. Equipped with an auto-draw battery, the "Slim" Oil Pen automatically activates when you draw from the mouthpiece. This draw-activated battery makes the vape pen much easier to use. When the battery eventually runs out, use the included USB charger to restore its power. Just unscrew the top half of the pen, then screw the bottom portion into the USB charger. Plug the charger into a USB port to begin charging. Apart from the battery's modern technology, this dual-use vaporizer also produces very flavorful vapor due to its wickless tank.