I am not convinced by the reviews on this page. Two glowing reviews, both reviewers having only ever written a single review, of this product no less.
I have gone through many a 'cheap' electronic pepper mill (and i would consider the current item in this category). They have all failed to perform adequately and all eventually fail. Ask yourself why these mills are being offered 'buy one get one free' (in case one should break down perhaps?) and save yourself the frustration and expense and invest in something pricier that you can be sure will work well and last.