Optimum Time Series 3 Big Sailing Watch Review - Sailing Chandlery

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May 08, 2025 2 min read

In this Article, we have a look at the World's most popular sailing watch, the Optimum Time Series 3 Big Sailing Watch.

The Optimum Time Series 3 Sailing Watch can be seen being used by sailors all across the World. 

We unbox this sailing watch, talk through what's included and show you the key settings and how to adjust your sailing watch.

  • How to change the time on your Optimum Time Sailing Watch
  • How to change the countdown mode on your Optimum Time Sailing Watch
  • How to change from count down mode

Big Easy to Read Display

Water Resistant to 5 ATM

Shock Resistant Construction

5,4,1,0 ISAF/World Sailing start sequence pre-programmed with audible warning signals (can be silenced if preferred)

The Optimum Time OS series 3 watches are the market leaders for dinghy sailors across the World.


The large face on the watch allows the sailor to easily see across the boat and count down to the race start. With many functions available this sailing watch is the essential tool for any keen racer.


This Optimum Time Sailing Watch can be mounted to the boat, strapped to the boom or worn on your wrist so you can always see the race countdown.


Optimum Time Sailing Watch Key Features

  • Large 65mm overall ABS case
  • 38mm x 20mm display size
  • Massive 16mm digit height
  • Single row display
  • Adjustable Viewing Angle
  • Boom/Mast Mount Bracket Supplied
  • Elasticated Strap for Wrist or over sleeve wearing
  • Water Resistant to 5 ATM
  • Shock Resistant Construction
  • Normal Timekeeping Mode (12 or 24 Hour)
  • Specialist Sailing Timer Functions:
  • Countdown repeat option or
  • Countdown and Up to show elapsed time for handicap races
  • 5,4,1,0 ISAF/World Sailing start sequence pre-programmed with audible warning signals (can be silenced if preferred)
  • 5 minute, 3 minute and multiples of 1 minute programs as well
  • "Sync Button" for instant synchronisation if a gun is missed

Buy your OS series 3 sailing watch today and choose from a great range of colours.



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