VHIT Boom is the next generation of vaporizers. Its a new model that uses dry tobacco instead of eliquid and turns them to vapor. This model is fully automatic - just load your herbs, hit the button 5-times and the unit will automatically heat up and the light will indicate when it is ready to use. Extremely easy to use - once it is heated up, just inhale the vapor from the glass mouthpiece, unit stops when you stop inhaling!