Suunto Observer measures your vertical ascents and descents, as well as the total number of runs skied and shows all that easily with one press of a button. It provides you with reliable information on barometric pressure and temperature and functions as a digital compass. Additionally, it has a calendar, clock, dual time display, and a stopwatch. Its timeless design makes it wearable in any casual situation; it includes an easy-to-read display with an extra-ordinarily wide viewing angle, electro-luminescent backlight and a user-replaceable battery. Because of its moderate size and stylish design it is perfectly suitable for both men, as well as women. Suunto Observer's altimeter has a range up to 9 000 m/29 500 ft with a 1 m/3 ft resolution. It features an altitude alarm as well as memory function for storing logs of your most exciting mountain adventures. The logbook allows the user to record total and cumulative vertical ascents and descents, as well as the number of runs skied.