E-cigar is the world's most advanced quit smoking product. It uses a small replaceable cartridge filled with propylene glycol and a small dose of nicotine, powered by a rechargeable battery. When the user inhales on the device, the air flow is detected by a sensor. A microprocessor then activates an atomizer which injects tiny droplets of the liquid into the flowing air and vaporises the liquid. Each cartridge is equivalent to 10 regular cigarettes, and it costs less then a dollar each.