The Kbox is a 40 watt box mod made from lightweight aluminum. It’s a variable wattage device but you can only choose from 7 pre-set wattage output settings. The device doesn’t even have an LED screen, instead there are 7 led lights that correspond to a different wattage output. From what I can tell the output choices are 8, 11, 20, 25, 30, 35, and 40 watts. I really don’t think this is going to be enough to satisfy most vapers. At least the Kbox can fire down to 0.4ohms so you can use it with the newest sub-ohm tanks like the Kanger Subtank.