Presenting the Aquadawn RO+ Submarine advance range of Under The Sink RO Water Purifiers. The most intelligent RO system in its category, the Aquadawn RO+ Submarine comes with advanced feature like automatic monitoring & auto service filter alarm that makes it an ideal choice for today’s households. Experience the purest form of natural drinking water with a stringent 9 stage filtration process devoid of impurities, toxins and pathogens. Taste water at its natural best.