Menu 1 lets you choose what type of output you want. Menu 2 lets you choose what you want to display on the LCD screen while the fire button is pressed. You can choose from Resistance, Battery, and Power. Menu 3 simply turns the LCD Screen On or Off. With the right atomizer and wattage setting, this device can produce clouds of vapor. The VAMO V3 brings out a lot of flavor in some e-liquids that aren’t quite there at 3.7V.