This cold-brew coffee system is passive: it does not connect to electric or water. It's made to cold-brew coffee overnight. A brew cycled should take about 12 hours.
The cold-brew system holds 3 gallons of water, and 3 pounds of ground coffee. Put coarse-ground coffee in the filter basket, fill the tank with water, and let the coffee brew overnight.
The coffee will remain drinkable for 2-3 days, but you should store it in the fridge overnight if you're going to do this.
Note that the system comes with a metal "ice cylinder" (see the upright cylinder in the photo). Store this in the freezer overnight, and put it into the coffee tank during the day.
The system is 20" high X 17.5" deep, and has a very narrow footprint: 8.25" wide.