Optimum Watch OS310

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 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