Instruct: Classify the given Amazon review as either positive or negative.
Query: Single Shortcoming Ruins this Timer

This timer was very difficult to set up. Then, after all the trouble, I find that in the 25 minute mode, it only counts down by minutes, not seconds, despite the fact that there are 4 digits available on the display in other modes with countdowns by minutes and seconds. The 25 minute mode is the standard for Scrabble brand game tournaments. For me that's a deal buster. I'm sending the unit back. Fortunately, Amazon makes returns really easy.