Shock resistant; resistant to mud; digital compass; hand indication of north; direction measurement as one of 16 points; bidirectional calibration; magnetic declination correction; bearing memory; thermometer; world time; stopwatch; countdown timer; 5 daily alarms with 1 snooze alarm; hourly time signal; LED backlight with Super Illuminator; auto light switch; selectable illumination duration of 1.5 seconds or 3 seconds; afterglow; full auto-calendar to year 2099; button operation tone on/off; low battery alert; 12/24-hour format; analog and digital regular timekeeping