The Optimum OS series is the famous 'Big Watch' used by many serious and world class sailors. This is the new remodelled version with improved reliability and features including: -16 mm LCD display -Compact and comfortable -5, 4, 1, 0 start sequence -5, 3 or 1 minute countdown -Alarm -Water resistant -Adjustable viewing angle -Boom mounting option -Countdown and up -Countdown and repeat -SYNC button -Positive 'click' buttons -Low battery indicator -1 row display, time-sailing timer functions -Bright yellow detailing
