This is a set of the POLAR H10N heart rate sensor and belt. I'm selling it because I no longer use it. I purchased it two years ago and used it for about six months. Operation has been confirmed. There are some minor scratches on the main unit's cover and some wear and paint chipping on the belt, but there are no functional issues. Please consider purchasing if you are interested. - Brand: POLAR - Included items: Heart rate sensor belt - Condition: Some wear and paint chipping on the belt Thank you for looking.