Keurig K-Cup In Room Brewing System, 11.1 x 10-Inches Single-use Water Reservoir, Brews One 8-ounce Cup Fits approximately 4.5 inches coffee mug with tray, 5 inches with tray removed Heat times may vary depending on temperature of water added Cold water can take 5-7 minutes, while room temperature water can take 3-5 minutes Not compatible with reusable K cup filters