Instruct: Classify Amazon reviews into positive or negative sentiment
Query: O.k., but I can't get the door open!

Pros: it's really cheap, and has a lot of features (set stride length, calories, clock, backlight, protective door)Con: the door is really, incredibly, intolerably hard to open. I was adding a dozen steps to the readout just trying to get the door open. I tried to trim the plastic tab, but I took too much off, now the door flops open. It was useless the way it came from the factory, now I broke it and can't use it at all without a rubber band to keep it closed.Also, I was never able to get a very accurate step-count. I would count 100 steps and usually get 65-90 steps on the readout, though I'm not really sure because I had to shake the thing for a minute or two just to get the door open.For the price, I think this would be a great deal for someone with the patience to work with it.