Working Range from -2,303ft to 30,058ft (-702m to 9,164m). Current, Accumulated and Maximum Altitude in Feet or Meters. 15 Altitude Log Book Memories with Log Date, Average-Ascent and Descent, Total-Ascent and Descent, Number of Hills and Total Time. Time/Day/Date/Month with Dual Time Zone. 12 or 24 Hour Format.