Singe-cup brewing system is for use with K Cups. It has patented heater for instant brew and benefit to make next brew immediately. A large 45oz. water reservoir (BPA free) allows you to brew 6+ cups before having to refill, saving you time. The water reservoir is removable, making it easy to refill whenever you need to. Simple button controls make it easy to brew your favorite beverage. Three options of brew size and programmable to 4 oz / 6 oz / 8 oz or 6 oz / 8 oz / 10 oz or 8 oz / 10 oz / 12 oz. You can stop brewing anytime by simply pressing the button. The auto-off feature is easily programmed to turn off your brewer after it has been idle for 15 min, 1 hour or two hours, which are programmable. It helps to save energy.