SUUNTO X6HR Heart Rate Wrist-Top Computer Watch with Altimeter, Barometer, and Compass Wrist-top computer/timepiece with altimeter, barometer, and compass Chronometer records accurate altitude profiles with 10- or 60-second intervals for up to 200 hours # Shows elevation up to 29,500 feet plus vertical speed; 6-hour barometric trend graph to help forcast weather changes Water resistant, tested to 100 meters/330 feet Synchronize with your PC to analyze performance