Comfort is key when training. That’s why Polar created the Polar WearLink®+ 31 coded transmitter belt. It not only measures your heart rate but also seamlessly adapts to your body shape so you feel as if it’s not even there.

The transmitter consists of an electrode strap and a connector, and with its functional side-clip mechanism, it’s just as quick to put on as it is to take off.  

• Soft textile material feels like clothing on the skin        
• Ergonomically designed to feel like it’s a part of you        
• Removable and machine washable textile strap 
• User replaceable battery
• Coded transmitter (reduces interference and syncs the transmitter with your own watch unit)
• Water resistant to 30m

Sizes XS-S, M-XXL (which is the size that ships with heart-rate monitors).

Compatible with...

• all Polar units listed on fitonline (even the entry-level units, but in their case, the coding function may not work),
• all treadmills, and all other fitness equipment listed on fitonline (provided, of course, that the unit has a receiver built in - refer to specs)