The IPV Mini 2 is a compact but beastly little unit that uses the upgraded YiHi SX330V2C chip and is powered by a single 18650 battery. It can fire any device with a resistance resistance between 0.2 and 2 ohms with settings between 5 and 70 watts (3.6-8.5 volts). It has 5 different wattage presets that you can tune to your liking if you'd rather not scroll up and down manually.