OS 310

Optimum Time OS Big Sailing Watch

FREE UK SHIPPING* - excludes masts, booms, trailers, trolleys and boats
3 items left
  • Optimum Time OS3 Big Sailing Watch

    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.

    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.

    Find brochures and instructions for the OS series 3 watch on the Optimum Time website.

    Optimum Time Big Yellow Sailing Watch Video Review

    Delivery and Costs

    We try to treat delivery as a pass through cost and keep the cost to you as low as possible, on top of our already competitive product prices.

    We offer free UK standard delivery for orders over £50, this does exclude boats, trolleys, masts, booms, rig packages and large items which can't be sent via standard mail.

    Any order placed by midday will leave us the same working day unless there is a lead time which we detail on the product page. We do not ship over the weekend or on bank holidays.

    Delivery Costs

    UK 2nd Class Small Packet - £3.99

    UK 1st Class Small Packet - £4.50

    UK 1st Class Small Packet - Over 1KG - £5.99

    DHL Next Day Courier - £8.99

    Courier - Long Items - Masts, Booms, Rig Packages Etc - £40

    Close to England - £10

    Boats, trollies and trailers - Custom quote, please get in touch

    We do not have other shipping destinations set up currently due to customs charges and the cost of shipping, this will be reviewed soon. If you would like to order an item and can't see your location simply drop us an email to info@sailingchandlery.com with the items you are planning on ordering and your address.

  • Frequenty Asked Questions

    What is the quantity for ropes?

    The quantity is metres. If you order 5 items you will receive one 5 metre continuous length of that specific rope.

    How do I claim a discount?

    Simply sign up to our newsletter and we'll send your unique sign up discount code to your inbox.

    Do you ship to other locations?

    We are always happy to provide you with a quote for shipping, simply drop us an email to info@sailingchandlery.com with the items you are planning on ordering and your address.

    Who are Sailing Chandlery?

    We're a team of sailors who are passionate about keeping you sailing and providing an excellent service first time. Find out more.

    I have another question?

    You can call the team on 01268 222912 or email us info@sailingchandlery.com

Customer Reviews

Based on 4 reviews
Daniel Nugent
Great watch

Easy to use watch, has really upped the racing game.

Jennie King
Big Yellow watch

Can’t beat it. I’ve had several over sailing career. Last one lasted for many sailing seasons but finally died after a long swim!

Sailing Watch

An excellent sailing watch, easy to use, easy to see from a distance and long lasting. We have ours on the boom of the boat so we can both see the countdown.

Tricia Parker
Great Service

Website easy to use and order arrived very promptly. I haven't opened the watch yet as it is a Christmas gift for my husband but it looks good.


Get in touch with our friendly team today

Still got questions? Our friendly team are on hand to help.

Call us on 01268 222912 or drop us an email info@sailingchandlery.com