DBJ Enterprises, Inc: Exclusive retailer of Polar products, including heart rate monitors, books, scales, and accessories.Fitmed, Inc: Online retailer specializing in the sale of heart rate training material and monitors.Fitzones: Shop for monitors by Polar, Reebok, Mio, and Cardiosport. Also sells pedometers, straps, and stopwatches.Health Check Systems, Inc: Shop for monitors by Reebok and Polar, Suunto sports watches, Timex bodylink systems, and Mio strapless heart rate monitors.HowToBeFit Wellness Technology: Includes fitness test, training programs, and Polar pulse and heart rate monitors.Polar USA: Manufacturer and retailer of personal and institutional monitors for fitness users; includes products, specifications, and resources for heart rate training and fitness.Sark Products: Shop for a variety of heart rate monitors and related accessories for athletics, personal fitness, and cardiac rehabilitation.Sensor Dynamics: Manufactures and sells heart rate monitors, pedometers, and RF and contact pulse receiver boards for exercise equipment.