Electronic cigarettes, or 'e cigs', are an increasingly popular alternative to old fashioned tobacco.
Opening up an e cig starter pack, received in the post, you find your e cigarette, a dozen or so screw-in refill cartridges, a couple of lithium batteries and chargers for mains plug and USB ports.
The e cigarette works by introducing tiny liquid nicotine droplets, via an atomizer in the refill cartridge, to the main e cigarette, which then vaporizes when you inhale. The end glows red when you do this, which is a nice touch and looks very realistic. Upon exhaling, harmless liquid vapour comes out of your mouth, looking like smoke.
But unlike smoke, the vapour is not harmful, dirty or smelly. You can use the e cig legally in pubs and other public places and it lasts much longer and is cheaper than tobacco smoking.