Bodylink Heart monitor strap

Digital FM transmission for clear signals around exercise equipment and power lines
Synchronized transmission prevents cross talk from other heart rate monitors
Smart transmission for long battery life
On-the-chest monitor provides continuous heart rate readings during even the most intense activities
Comfortable, adjustable elastic strap.
Replaceable batteries
2 year battery life**
Sensor–Water resistant 30m (Sensor will not provide accurate heart rates when underwater.)
Data recorder compatible

Can be used with the performance monitor watch, and data recorder. Is compatible with all Timex digital heart straps.