Suunto S-Lander Wrist-Top Computer Watch with Altimeter and Barometer Features highly accurate altimeter, barometer, watch and stopwatch functions Logbook keeps record on the total and cumulative vertical ascents and descents, as well as the number of runs Automatically records barometric data for the past four days Features electro-luminescent backlight for dimly lit conditions Designed with a stylish, non-allergenic aluminum casing and water-resistant fabric strap