103093 Features: Built-in altimeter displays current altitude with a range of -500 to 9000 meters or -1,600 to 29,500 feet Altimeter logbook can now store up to 39,999 ft and includes average vertical ascent and descent, number of runs, and duration of the event Barometer functions include absolute pressure range, sea pressure range and temperature displays 4-day barometric memory in intervals of 1 hour for the first six hours, and then in six hour intervals allow you to track changes in weather and remain prepared for incoming storms Digital compass can be used anywhere in the world, features declination adjustment and a bearing tracking mode that displays the difference between a locked bearing and actual bearing Time features include a 12-24 clock, 3 daily alarms, a hronometer that can record 1-99 split times and split times for 1 run, and a dual time display for those traveling in different time zones Shock resistant and water resistant to 100 meters or 330 feet Specifications: Weight: 31 ounces Increments: 1 degree Declination adjustment: Yes Altimeter: Yes