HowToBeFit Wellness Technology
- Includes fitness test, training programs, and Polar pulse and heart rate monitors.
- http://www.howtobefit.com/

Health Check Systems, Inc
- Shop for monitors by Reebok and Polar, Suunto sports watches, Timex bodylink systems, and Mio strapless heart rate monitors.
- http://www.heartratemonitor.bz/

DBJ Enterprises, Inc
- Exclusive retailer of Polar products, including heart rate monitors, books, scales, and accessories.
- http://www.heartratemonitors.com/

Fitzones
- Shop for monitors by Polar, Reebok, Mio, and Cardiosport. Also sells pedometers, straps, and stopwatches.
- http://www.fitzones.com/

Polar USA
- Manufacturer and retailer of personal and institutional monitors for fitness users; includes products, specifications, and resources for heart rate training and fitness.
- http://www.polarusa.com/

Sensor Dynamics
- Manufactures and sells heart rate monitors, pedometers, and RF and contact pulse receiver boards for exercise equipment.
- http://www.sensordynamics.com/

Sark Products
- Shop for a variety of heart rate monitors and related accessories for athletics, personal fitness, and cardiac rehabilitation.
- http://www.sarkproducts.com/

Fitmed, Inc
- Online retailer specializing in the sale of heart rate training material and monitors.
- http://www.heartmonitors.com/