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Title: Don't even bother to try it
Review: Lousy, dim product. All I can add to the other negative reviews (other than my agreement) is that concentric ripples of light and dark emanate from the diodes. Not only is it too dim to read with in the first place,but you have to read across the alternating circles of light and dark...(Amazon edited out the rest of my comment, which was that I planned to return the item the next day.)
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