Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Out of the box, did not work

I spent half hour (not counting opening the package it was packed it) trying to get the time set. No luck. Could not reset according to instructions, or indeed, at all. From other reviews, sounds like some of these work great; others, not at all. Unfortunately, I got one of the lemons. Easy return per Amazon. Hope that works.