For your most courageous mountain expeditions, get the Suunto Vector. This amazing multi-purpose watch provides a terrific multitude of outdoor features; it combines the functions of a barometer, compass, and altimeter. The altimeter features a range up to 9,000 m. / 29,500 ft., putting all 14 of the world's 8,000+ meter summits within your reach. It also features an altitude-difference-measurement function for following the vertical progress between different stages of a climb. It also comes with an automatic 24-hour memory that stores the altitude and ascent/descent rate for every hour and an altitude alarm. The log recorder stores all your movements in altitude between the start and stop times, so you can re-live your trip at home. It is also capable of displaying the current sea level pressure as a detailed graph, showing recording of the last 24 hours at an interval of 30 minutes. Its digital compass displays the cardinal or half-cardinal point and the north. The watch functions include time, dual time, date, alarm, sports chronograph, countdown timer, and predicted times for sunrise and sunset. For reliability and performance even in the harshest of environments, choose the Suunto Vector.