Electronic cigarettes, popularly known as e-cigarettes, e-cigs, or vape pens, are devices that resemble the practice of common tobacco smoking. The device is electrical in nature and mostly consists of a power source such as a battery, a heating element, an atomizer, a mouthpiece, and a place to hold a liquid such as a cartridge or a tank.
E-cigarettes are classified as electronic nicotine delivery systems (ENDS), and most of the versions are reusable. It comes in various designs, and some resemble regular cigarettes, cigars, pipes, pens, USB sticks, and other everyday items.
