This is my second water filter after my first one, a Korean product runs out of stock of cartridges. Hence the main point to consider when I buy the second water filter is easily available cartridge and effective filtering. And I found that in Panasonic water filter. It contains powdered activated carbon and the water flow from filter is very fast - at 6 liters per minute not like some water filter where the filtered water takes ages to come out . It also comes with a long cartridge life span meaning one cartridge can filter 12 500 liters before the next change of cartridge. This is a completely made in Japan product. I love Japanese technology. They are very innovative as proven by the cartridge life checker which will show us when is the time to change the cartridge by its change of colour, That is what I call innovative. The outlet pipe can also be rotated 360 degrees to suit our daily use in the kitchen .