4.0 star energy & 5.0 star water rating: for very high energy efficiency and particularly low water consumption. RackMaticPlus: 3 stage height-adjustable upper basket for even greater load flexibility. AquaStopPlus: 24/7 anti-flood protection. Guaranteed. WhisperQuiet: really quiet operation at only 44 dB. VarioSpeed: The same great washing and drying results in up to half the time.