50 pack of refills for Joye 510 model Electronic Cigarette. One 5 cart refill pack is roughly equal to 3 packs of tobacco Cigarettes in this model. This should be a pack a day for 50 cartridge refills. Smokeless Cigarette refills produce harmless water vapor not tobacco smoke. Refills can have different levels of nicotine. High, Medium, Low, and Zero nicotine are all options.