E-Cigarette(E-cigar,health cigarette) SD-EC508:Electronic Cigarette: 1. It looks,feels and tastes like a traditional cigarette 2. No tar and other carcinogenic substance or harmful ingredients to human body. 3. No ignition and fire hazard. 4. No problem with disposing of cigarette butts or ashes. 5.No nasty smells and air pollution (no release of CO2). 6. Enable smokers to abstain from smoking non-painfully. 7. Save the smoking cost 80% each year Optional Density: Szie:84x8.5mm. High: 16 mg. Medium: 11 mg. Low: 6 mg. None: 0 mg. Specification: 1. Size: 85*8.5mm. 2. Atomizing Device:1pc. 3. Battery:1 pc. 4.Usb Charger: 1pc. 5. Atomized cartridge:10pcs. 6. Instruction Manual: 1pc. 7.Working temperature: Ambient temperature from -5 to 42.