Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The watch is good, but the straps

I bought this HRM for my wife together with another Times HRM. The watch is good and it has a lot of functions, however, the strap is a waste of money. My one broke in 6 months. It broke in the junction of the middle part and the part that has the heart sensor. I took it to a technical assistance that replaced it, but it last 4 months. My wife's one had the same problem after 16 months. I think that Timex should look into this product (strap) to find out how to fix this problem.