Instruct: Classify Amazon reviews into positive or negative sentiment
Query: lasted 2 weeks

This timer was somewhat useful but the buttons stopped working right at the 2 week mark. Anyway, there's an app for that. Several in fact if you have an iphone/ipad/iwhatever. Similac has a free one but there's also "total baby", "baby connect", and several others which are more useful than the Itzbeen because they store the information and you can go back and look at trends etc.