Replacement for Polar FT4 strap
I was having inconsistent readings with the original strap so after changing batteries and troubleshooting, my husband and I determined the strap was too loose. I am 5'3&#34; 115 lbs and this strap was a perfect replacement for the strap that came with my Polar FT4 heart monitor watch. It's been a few weeks and works perfectly.
Rating: 5 stars