Brand New Never Used Before Keurig K450 Brewing System! Manufacturer's Description. The Keurig 2.0 K400 brewing system is the first Keurig system that allows you to brew a piping hot 4-cup carafe with the same ease and convenience of brewing a single-serve cup. All at the touch of a button. The Keurig brewer also features revolutionary Brewing Technology, designed to read the lid of each K-Cup or K-Carafe pod to brew the perfect beverage every time. A feature-filled, programmable brewer. The brewer also features a large 70 ounce Water Reservoir, 2.4 inch color Touch Display, programmable clock, an auto brew option, and a strength control setting for brewing bolder coffee. There’s even a separate setting for hot cocoa and other specialty beverages like chais and mochas. So many choices. Choose from more than 400 varieties of coffee, tea, and specialty beverages. including iced beverages The box itself is old but the Keurig is brand new and never has been used before.