The MVP is a 100% digital mod with variable voltage and variable wattage settings. The MVP makes it easy to swap atomizers, just screw it onto the 510 threads or ego threads and hold the variable voltage and variable wattage buttons. At that point, the display will read the correct voltage setting so you never have to worry about burning an atomizer with the wrong voltage setting. Voltage is great for compatibility but wattage is what really counts. Want a cooler more relaxed vape? Take it down a notch. Want fat cumulus clouds billowing from your mouth? Take the wattage up a couple levels if you can take the heat.