Works longer more quietly & uses less energy,Digital Inverter Technology automatically adjusts the compressor speed in response to cooling demand across 7 levels. It uses less energy, minimises noise and reduces wear and tear for longer-lasting performance. * Based on internal testing compared with Samsung conventional model.Moisture-Full Freshness all over the fridge, Only Twin Cooling Plus™ creates a favourable environment for preserving fresh food in the fridge with 70% humidity, compared to 30% in a conventional Frost Free Refrigerator. So it keeps ingredients fresh for longer without drying out.Deliciously tasty, odor free frozen food, The Twin Cooling Plus™ system cools the compartments separately to stop unexpected odors spreading from fridge to freezer. So frozen food retains more of its original flavor.