Large 90mm x 63mm overall ABS case. Massive 17mm upper digit height and 9mm lower digit height lanyard, karabiner, and clipboard mount options. Water Resistant to 3 atm Plus shock Resistant Construction. Normal Timekeeping Mode, Calendar, and Alarm, Countdown repeat option or Countdown and up to show elapsed time for handicap races. 5, 4, 1, 0, ISAF start sequence pre-programmed with audible warning signals. "Sync Button" for instant synchronization if a gun is missed. Electronic Compass with Indication of position of North, plus 3 digit bearing reading to within one degree.