The DSE901 is our most popular and stylish E Cigarette.  It also offers great quality vapor especially when used with smoke juice.  The cigarette is comprised of a battery, an atomizer and a cartridge.  When you inhale, the atomizer is engaged and the Blue LED will glow.  When you stop inhaling, the atomizer will turn to stand by mode. Everything you need to get started is included except Smoke Juice: DSE901 Cigarette, 2 Atomizers, 2 Batteries, 1 USA Wall Charger, 5 Blank Cartridges .