Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Transmitter strap broke after 15 months

I got this for Christmas 2011. It worked fine until the rubber transmitter strap broke off at the transmitter. I have never put any stress on the strap. I glued it back on but it no longer transmitted. Researching I found that the side pieces are part of the pickup system. I can't find a replacement transmitter, just the whole set. I will try a different brand next time. My old Polar unit worked for many years until the battery went out.