This hands free vaporizer employs an effective glass ceramic heating element that has surpassed all previous box style direct inhalation systems. This is a nice glass-on-glass herbal vaporizer. The Revolt contains a digital thermostat control for optimal performance and temperature control. Ground Glass Technology (GGT) allows the vapor whip to rest on the unit allowing a hands free vaporizer experience. The Revolt was designed with a replaceable fuse so that surges or electric fluctuations wouldn?t burn out the Revolt?s on board computer but only blow the $3.00 fuse. This expands the life span of the unit significantly.