The Samsung RT37K3993BZ Refrigerator comes with a Cool Wall feature that maintains the internal temperature for 12 hours during power cuts. This refrigerator uses digital inverter technology that ensures long-lasting usage. The dual fan technology allows to set different temperatures for fridge and freezer. You store keep vegetables and fruits in a specially designed drawer called moist fresh zone that keeps the temperature at an appropriate level. This refrigerator includes additional features like Ice Max, Power Cool, Fresh room, Power Freeze and more. Cyclopentane Insulation. Multi Flow. Smart Connect Inverter (Automatic). CoolWall. Freezer Cool Pack (12 Hrs). Easy Slide Shelf. Moist Fresh Zone. Deodorizing Filter. All Round Cooling. Convertible Freezer. Dual Fan Technology. Cooling even at 55 C. Power Freeze. Digital Display. Big Bottle Guard. Humidity Control (Drawer Only). Fresh room.