The F11™ is an exerciser's dream come true. A revolutionary heart rate monitor that creates a workout program to tell you how much, how hard and how long to exercise to reach your goals. The Keeps U Fit™ - Workout Program guides you to your personal goals. OwnIndex® will determine your fitness level, track your improvements, and provide motivation. The OwnCal® feature counts the calories and fat that you burn and the OwnZone® feature will automatically determine each day's target zone. The F11™ also features the WearLink Coded transmitter made from a soft, fabric material. The electrodes, which pick up the heart signals, are integrated right into the strap for added flexibility and comfort. The Coded feature eliminates interference from other heart rate monitors. The F11™ is the closest thing to having your own personal trainer.