Optimum Jumbo dark blue series 3 OS314
Plastic cased watch with elasticated strap and LCD display.
Time of day and Sailing functions with audible alarm.
5,4,1,0 sequence or 5 min or 3 min or 1 min programs.
Countdown & repeat or Countdown and up.
Sync button for instant syncronisation if a gun is missed.
Count up from zero