The Extreme Networks, Inc 97007-H31206 EW 4HR AHR H31206 97007H31206 is a high-performance, 4-hour event-based heart rate monitor that provides real-time heart rate data for monitoring heart health and fitness. The 97007-H31206 EW 4HR AHR H31206 97007H31206 is a compact, lightweight, and easy-to-use heart rate monitor that can be worn on the wrist or attached to a belt. The 97007-H31206 EW 4HR AHR H31206 97007H31206 features a high-resolution LCD display that provides clear, easy-to-read heart rate data. The 97007-H31206 EW 4HR AHR H31206 97007H31206 also includes a built-in memory that stores up to 4 hours of heart rate data, and a rechargeable battery that provides up to 4 hours of continuous heart rate monitoring.