Designed by Yves Behar, the Source includes several enhanced design features. Its snap-lock; bottle mechanism (means no more screwing your bottle in) makes for effortless preparation while the intuitive LED display provides a clear signal on the level of carbonation allowing you to make your fizzy drinks just the way you like them. Model number; 1219511440. All sodastream carbonating bottles are reusable with a lifespan of up to 3 years ; perfect for reducing the need for single-use plastic bottles and to minimise household plastic waste. Empty co2 cylinders can be exchanged with ease at your local argos store. Users report that they drink up to 43% more water since investing in a sodastream and are less reliant pre-packaged drinks. Produces 60 litres of sparkling water. 1 gas cylinder supplied. Includes 1 carbonating bottle with a 1 litre capacity. Size H42, W13, D26cm. Weight 3.64kg. Manufacturers 2 year guarantee.