This Polar 3890065 Transmitter and Belt is an excellent accessory for gym and training enthusiasts. With its high-quality build, this product is perfect for monitoring your heart rate while you work out.
I depend on Polar, but it seems they are going high tech. This particular item works great, and the chest band is really comfortable. I have been using Polar for 15 years, and except for the battery in the chest strap only lasting about a year and cannot easily be replaced, it is perfect for me.