The chrome Smoktech Zmax is a telescopic mod that allows you to use several different styles of 18650 batteries with an additional extension end cap that gives it the flexibility. This device functions on variables of voltage from 3.0-6.0 in 0.1V increments, and in variable wattage from 3.0-15 in 0.5W increments.
The Smoktech Zmax has an LED screen with 8 menu options that can be accessed and controlled by the power button. Through the menu you can control the battery charge level, voltage, wattage, turning the LED off or on while vaping and tune the output voltage to either RMS or mean. This mod is compatible with any 510/eGo threaded clearomzier.