The Darwin lets us dial in our desired watts/power, heat and it maintains that wattage setting even as the resistance of the atty/cartomizer changes over time and no matter what atty/carto we attach. There's also a bunch of safety built into this device. Want to know the difference between variable volts vv and variable watts vw? Want to know why I'm not a big fan of dual coil cartomizers too? Here's the video. Thanks for watching.
