SodaStream Genesis Home Soda Maker Starter Kit, Green and Grey (Green/Gray) Transform ordinary tap water into fresh great-tasting soda or sparkling water in less than 30 seconds Choose from over 60 better-for-you regular diet and all-natural soda mix varieties with no high-fructose corn syrup and no aspartame Each bottle of soda mix makes up to 12 liters of soda (33 cans), Requires no electricity, package includes, Genesis Soda Maker Unit, 3oz CO2 Carbonator, & 1 1L reusable carbonating bottle Exchange the 3-ounce starter CO2 carbonator for a full 60-liter carbonator with included mail-in rebate