Optimum Time OS 315 Sailing Watch <p> Jumbo plastic case - 1 row display.</p> <p> Optimum Time - the specialist sports timing company - announces the arrival of a complete range of sailing watches to suit all needs and budgets.</p> <p> 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.</p> 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: 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<br><br>Please note that where applicable, sizes shown are United Kingdom sizes.