Vape Pens are most commonly known in the Vaping Industry as Tube Mods and feature a cylindrical body, perfectly accommodating a vape atomizer similar to its dimensions. Vape Pens usually come with a integrated battery and features a regulated mechanical style output, meaning that the wattage/voltage output is dependant on the remaining battery life the device yields. Some vape pens do have an integrated chipset that allows them to be variable wattage