Contains purified nicotine at levels recommended by the WHO for nicotine replacement therapy It is the 4th General ec cigarette prodcut. the diameter and longth is more and more small. which is the same as original cigarette:Φ11.4 *152㎜ Nicotine is supplied in liquid form to the cigarette via atomizing cartridge; total nicotine content per cartridge is less than that of 20 regular cigarettes. The cartridge delivery system is discontinuous - it is not in a steady stream - to reduce electronic cigarette usage and encourage the smoker to gradually cut back Does not emit tar, carbon monoxide, carcinogens or any of the other 4,000 harmful substances found in regular cigarettes No ignition required, eliminating the risk of fire Non-flammable operation means no secondhand smoke Working temperature: -5 to 42 degrees C Warranty: 1 year In retail packaging SIZE of cigarette:longth:107mm,diameter 8.5mm weight of cigarette:11g Standard Certification: RoHS;CE Package Includes: Electronic cigarette Atomized nicotine cartridges x 5 Charger (US) Power line User manual Gift box packaging