Utilizing convection based technology, it has rapid heat up times as quickly as 5 to 10 seconds. The Revolution Essential Oil Vaporizer Stem Low Voltage employs a unique heater core technology that heats a ceramic serving as the base of the heating chamber. The porous ceramic absorbs and heats essential concentrate, delivering the cleanest application process possible for your favorite oils. At just 2 ¾ inches in length, the Revolution Essential Oil Vaporizer Stem Low Voltage conveniently connects onto any Voltage Low Voltage Battery Vaporizer with 510 thread attachment. A 100% American made design, clean heating element, universal application method and completely easy to use; the Revolution Essential Oil Vaporizer Stem Low Voltage is a great addition and worth the investment.