This Bluestar Prisma water purifier comes with 4.2 litres storage type. It has 5 stage purification with Reverse Osmosis and UV. It has features like Double layered RO+UV protection, Super fine sediment filter, Purification capacity of 250 litres/day, Anti stagnant ripple technology, Ultra high TDS removal, 1-litre smart selection, Superior water recovery of up to 33%, Touch sensors, Electronic dispensing button, Taste enhancer, Tank full indicator with 9.3 kg in weight.