I was given an opportunity to try and test the product. When the box arrived i was very excited to try...the box contain 4 things - fizzi unit, co2 cylinder,empty bottle and 3 flavour syrup bottles. Assembly was very simple - just screw the CO2 canister in to the Fizz unit, empty bottle to be attacked near nozzle and you're pretty much ready to go. If u need strong soda u have to press fizz unit button three times till u hear loud sound... And there u go ur soda is ready... I like the ease of making soda at home very much. I would recommend this product but if u get an option to get digital one that should be best in my opinion.