I will introduce the instruments of the watered coffee 2 liters. 2 liters of water is placed in the ball of the upper. Two of one liter of coffee is made. As the instrument called drip formula, drops will fall in one second. Parts to put the coffee beans is the longer and small, so it is possible to extract the coffee evenly. It can make coffee in about three to four hours roughly. Water coffee can keep three or four days because it is not heated. Mellow delicious coffee you can taste. Please utilize all means.