Frontloading washing machine series samsung eco bubble colour white wash efficiency rating a energy rating a capacity 7 kg annual energy consumption 173 kwhyear annual water consumption 9 400 litres spin efficiency b noise level washing 61 db noise level spinning 79 db spin speed rpm 1 400 rpm household size medium household 3 4 persons wash programmes cotton synthetics baby care wool hand wash spin rinse pre wash intensive soak eco en