Model No.:esmart The Kanger e-Smart is the latest compact electronic cigarette from Kangertech. High capacity batteries rated at 320mAh and the latest easy to use clearomizer technology. These batteries feature a 5 click on and off that prevents them from being activated when not in use. The batteries use standard KR808D-1 style threading so they are backwards compatible with your existing 808D-1 style cartomizers. e-Smart batteries will -not- charge in a KR808D-1 charger and KR808D-1 batteries should not be charged on the e-Smart USB charger. These are very similar in size to the JoyeTech eCab. They are slightly larger in diameter than a normal KR808D-1 but thinner than the JoyeTech eGo series. We expect these to replace the KR808D-1 series. Each starter kit comes with: (2) 320mAh high capacity pushbutton batteries with KR808D-1 threading (5) 1.3ml blank clearomizers ready to be filled with the juice of your choice (not included) (1) AC to USB wall adapter with European plug adapter (1) USB e-Cigarette charger (1) Instruction manual