Keep a track of where you go, and how much you have climbed on a mountain with the Sunnto Core. This all-in-one watch offers outstanding features; you can use it as a barometer, compass, thermometer, and altimeter. The core altimeter offers an altitude difference measurement, so you can keep a track of your progress in terms of altitude climbed. 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. It also comes with weather trend indicator that enables you to quickly check upcoming weather conditions and storm alarm that notifies you of a sudden drop in air pressure. 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. It also comes with a long-lasting user-replaceable battery for your convenience. It features multi-lingual support, so you can easily use it in a language you are familiar with. For reliability and performance, choose the Sunnto Core.