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OS311 Features
- Series 3 Black
- Plastic cased watch
- Elasticated strap
- 1 row LCD display
- Time of day
- Sailing functions with audible alarm
- 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
OS310 Specifications
- 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