The Fatal 100w TC Box Mod is QP Design's first device to be released, and offers a bunch of features making it unique, and comfortable. For one, it's been ergonomically designed to fit comfortably in your hands. The firing and wattage adjustment buttons are located on the front, but is placed perfectly.
As you hold the the QP Design Fatal Mod, your hand will naturally wrap around it, and your finger will be placed right on top of the firing switch. When comparing it to other vape mods, it's definitely one of the most comfortable, that's for sure.
