This R-V400 comes with Hitachi’s new cooling system, a combination of two innovative technologies, the Inverter compressor and Dual Fan Cooling. This helps cools each of the compartments independently over a wide range, providing optimum cooling and freshness for your food at all times. This new cooling system assures even more efficient operation with no wasted energy and low energy bill. The Nano Titanium filter provides a powerful antibacterial and deodorizing effect for your stored food. Hitachi refrigerators are available in a wide range of colors, sizes, styles and finishes to not only suit the budget but also to integrate seamlessly into the kitchen design.