Keurig K155 OfficePRO Premier Brewing System with Bonus 12 count K-Cup Variety Boxbr Choice of 4 cup sizes 4 oz 6 oz 8 oz and 10 oz br 90 oz removable water reservoir br Energy Savings Mode - Auto OnOff br Quiet Brew Technology br Drainable internal hot water tank br Keurig K155 OfficePRO Premier Brewing System with Bonus 12 count K-Cup Variety Boxbr