(1) button click to engage power and vaporize the cartridge contents!
(2) button clicks will preheat the contents of the cartridge; simply let this cycle to the end (indicated by color cycling) or press the button to begin vaporization
(3) button clicks will select the variable voltage as follows:
Red is 4.0 Volts, Blue is 3.8 Volts, Green is 3.6 Volts