The Cartomizer (KR808D-1) is the most convenient electronic cigarette. Instead of a normal 3-piece design, the cartomizer features just 2 separate parts: a battery and a cartomizer. The unique aspect of this model is that the cartomizer is actually a combination of an atomizer and a cartridge. Since the two pieces are combined, the cartomizer is able to hold a significant amount of e liquid in volume. When the e liquid is completely used, the entire cartomizer is thrown away and is replaced with a brand new one. Although the cartomizer is "disposible" it certainly dose not perform like one. Infact, it is known to produce just the right amount of vapor with a surprising ability to enhance the e liquid flavors better than other models.  The benifit of using a new cartomizer each time is that you get a fresh new cartridge to vape with. This model requires minimal maintenace and portable enough to be comfortably carried around with you.