These smoking alternatives consist of a rechargeable battery that can be plugged into a USB charger, Car charger, or a Home charger. The battery of the Electronic Cigarettes connects to a device called an atomizer, which evaporates a nicotine or non-nicotine cartridge. The nicotine cartridge in the Electric Cigarette comes in High, Med, Low and No nicotine. When all three pieces of the E- Cigarette are connected, all you do is simply draw on it like a traditional cigarette and enjoy the same feeling!