The Optimum Time Sailing Watch OS463 has a Fashionably oversized ABS case with an Integrated soft touch PU Strap

• Case of 65mm
• Heavy-duty stainless steel buckle
• 37mm round display size
• 2-Row display
• Large 11mm high upper digits and 6mm high lower digits
• Water Resistant to 5ATM
• Shock Resistant Construction
• Easy function selection via dot matrix display
• Benefit from viewing real time and sailing timer together
• Normal Timekeeping Mode (12 or 24Hours)
• Calendar Function (date/month or month/date)
• Alarm function (for wake up calls etc) 
• Electo-Luminescence backlight feature.

Specialist Sailing timer functions such as:

• 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
• Tide predictor to bie indcation of high & low tide for 3 locations on any date. Works on a calculation method of 12hrs 25min and 14sec
• Tide graph to show state of the tide at the present time
• Electronic Compass with Arrow to point at target
• Indication of position of North, plus 3 digit bearing reading to within one degree
• Cardial Bearing shown on dot matrix panel (eg NNW)
• Declination (Variation) Angle adjustment for worldwide use