Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I've had two, and both have broken within two weeks

My company is using these for a healthy walking competition/event. Thousands of these pedometers have been passed out, and between me and my co-worker, we've tried four of these units. All four of them have had issues:#1 Wouldn't even turn on#2 Clip that keeps pedometer from opening up weakened, so unit would open constantly (and eventually broke)#3 Skipped hundreds of steps in a given day for no apparent reason#4 Keeps on resetting itself.Piece of garbage. Not worth the money.