... GPS Surveying Equipment--ALTIMETER (with compass, or with barometer, or with heart monitor.) Altimeter DA-120, DA ... lit LCD Display (3-5²)· Excellent multifunction---AltimeterBarometerCompass (Digital)Calendar/Clock/AlarmChronometer (DA-120, DA-140)Count-down Timer ... ±3mbarCompassRange: 0~360°; Resolution: ±1°; Accuracy: ±3°Calendar/Clock/AlarmAuto-calendar: 2000-2099; Hour, Minute, Second, Month, Date ...