Make your own custom-carbonated sparkling water and flavored sparkling water from tap water;One touch buttons let you choose low, medium or high level of carbonation;Kit includes soda maker, 4-ounce CO2 carbonator, 1L carbonating bottle, and power adapter;Once empty, exchange the 4-ounce starter CO2 carbonator for a full 60-liter carbonator with included mail-in rebate at over 15,000 locations;Limited lifetime warranty