Optimum Time OS315 Jumbo Sailing Yellow Watch

Optimum Time OS315 Jumbo Sailing Yellow Watch

In stock


Price includes VAT, plus delivery

Optimum Time’s new sailing range is built around the success of the original “Big Yellow Watch”

What has now become accepted by serious racers as “the badge” to wear, has been complemented by various styles of watch that share the Optimum Time doctrine – watches designed specifically for a sport, that are easy to use, and easy to read when the going gets tough.


  • Large 65mm overall ABS case
  • 38 x 20 mm display case
  • Massive 16mm digit height
  • Adjustable viewing angle - attach to your mast or pop it on your wrist
  • Elasticated strap for wrist or over sleeve wearing
  • Water resistant to 5 ATM
  • Shock resistant construction
  • Normal timekeeping mode (12 or 24 hr)
  • Specialist Sailing Timing Functions:
  • Countdown repeat option
  • Countdown and Up to show elapsed time for handicap racing
  • 5,4,1,0 ISAF start sequence pre-programme with audible warning signal (can be silenced if preferred)
  • 5 minute, 3 minute and multiples of 1 minute programmes aswell
  • "Sync button" for instant synchronisation if a gun is missed


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