Suunto X3HR - Heart Rate Monitor

Time, Altimeter, Thermometer, Heart Rate Monitor, Alarm. Transmitter Belt Included. Heart Rate Functions Heart Rate Limits 10 Logs with Summary Values Average Heart Rate in Real Time 4 kB Memory Capacity History Memory Altimeter Functions Altitude Range -500 Meters - 9000 Meters (-1600 Feet - 29, 500 Feet) Resolution: 1 Meter (3 Feet) Total Ascent/Descent Temperature Compensation Weather Functions Absolute Barometric Pressure Temperature Chronograph Functions Maximum Number of Split Times for Log: 10 Interval Timer Stopwatch Countdown Timer Watch Functions/General Properties 12/24 Hour Time Calendar 1 Daily Alarm Water Resistance 30 Meters (100 Feet) Metric/Imperial Units User-Replaceable Battery Low Battery Warning Backlight Composite Housing Material Rubber Strap Extension Strap is NOT included, but is available through Suunto Weight: 50 grams