Instruct: Classify a given review as either positive or negative.
Query: Don't Buy This!

I gave it one star because it pretty much broke and fell apart as soon as I opened the packaging. I would've demanded a refund or replacement from Amazon, but shipping it back would've cost as much as the product. Previously, I've used a $11 one purchased from Walgreens and it lasted years before the battery died. After this fiasco, I went to CVS to get my usual $11 one and it works great.