One Cup Space Saving Coffee Maker Perfect for coffee, tea, hot chocolate and more! This compact unit brews directly into your mug (and it fits a variety of mug sizes). Coffee maker has a water level window, illuminated on/off switch and includes a permanent nylon filter (no paper filters required!). Bonus mug included! Holds a maximum of 10.5 oz. of water. Bonus mug: Ceramic. 11 oz. capacity. ETL listed. Approx. 5.5" dia. x 9".