Altimeter / Barometer / Compass / Storm Alarm / Water Resistant / Stopwatch / Backlight option for night use / Uses replaceable batteries # The Suunto Core Wristop not only tells the time but has many other intelligent features. It has a compass so you can find your way. Never get caught in bad weather again. This unique wristwatch warns you of an approaching storm coming your way. Telling the time in the dark is easy, the Suunto Core has a backlight option. For people who love to watch the sun rise and set; this watch can predict the times for these magnificent events. Uses replaceable battery. Altimeter # Altitude range: -500m - 900m / - 1600ft - 29500ft # Automatic 7 day Alti - Baro memory # Difference measurement # Altimeter / barometer lock # Automatic Alti / Baro Switch # Lockable logs # Total Ascent Descent # Log graph # Vertical speed # Resolution: 1m # Logbook function # Temperature compensation # Chronograph: # Stopwatch # Countdown timer # Compass: # Guided calibration # Heading in degrees # Bearing tracking # Declination setting # Cardinal directions # Other: # Backlight option for night use # Menu-based User interface # Water resistance: 30 / 100ft with uw buttons # Dot matrix display # Mineral crystal glass # Backlight type: Electro-luminescent display # Selectable metric / imperial units # Storage temperature: - 30 degrees C - + 60 dgrees C / - 22 degrees F - + 140 degrees F # Operating temperature: - 20 degrees C - + 60 degrees C / -5 F - + 140 degrees F # Power: # User replaceable battery # Low battery warning # Special: # Languages: 4 language menu (DE, EN, ES FR) # Depth meter # Button lock # Rotating bezel # Watch: # Alarm Snooze # Calendar clock # 12/24 # Daily alarms: 1 # Weather: # Barometer range: 8, 9 - 32, 4 inHg / 300 - 1100 mbar # Trend graph # Altimeter / barometer lock # Altimeter/Barometer resolution 0,05 inHg / 1 mbar # Storm alarm # Temperature # Temperature resolution: 1 degree C / 1 degree F # Sea level pressure # Temperature range: - 20 C- + 60 C / - 5 degree F - + 140 degree F # Trend indicator