Because I have already used it till 1 year and its true that this is more relieable and more effective product its cooling ability is also owesum very low tempreture you can used it and I am saying you my friends its result is owesum its deefraust switch make it great because it defraust ice esily and clear all freezer ice I am using this till 1 year so my experience is that its realiable youcan use it and see its effective features and I think more effective features when you use that you saw that this outstanding quality features who esily colling and fress your foods and drinks.