The Home Core concept integrates the toilet bowl, sink, mirror and a vanity table into one. However, this is not the central theme for this all-in-one-loo. There is a water storage tank right below the sink, where you can choose to store the currently used water or allow it to drain off. (The stored water is meant for flushing the pot) Also, the water pressure from the tap can be moderated to four different levels, giving you the satisfaction of conserving some resource.
source : itechfuture