Optimum Time OS Series 3 Sailing Race Timer from Optimum Time, the most popular sailing race timers on the market. As used by Club Sailors to Olympic sailors, from Juniors to Seniors, just ask for the Big Yellow or Jumbo Sailing Timer from Optimum Time. The OS Series 3 with a 1 row display is a waterproof watch which features time of day, a count up (from zero) timer, and a programmed countdown timer with alarm. The countdown timer can be set to countdown to zero and count up again or to countdown to zero and then repeat the programmed period. Once the countdown timer is running the start/stop, sync and mode buttons are the only ones that will have a function. At any time a button is press that is going to have any functions the alarm sounds a single beep. Optimum Time Race Watch is the sailing timer that has set the benchmark. The Optimum Sailing (OS) Series 3 range from Optimum Time has recently had some cosmetic changes with updated graphics and improved circuitry for even greater reliability. The improved electronics also provides greater static electricity protection and better battery life. Features: Large 65mm ABS case 38mm x 20mm display size Huge 16mm digit height Supplied with Boom/Mast Mount Bracket Elasticated Strap Water Resistant to 5 ATM Shock Resistant Construction Normal Timekeeping Mode Countdown repeat option CountDown and countUp functions for handicap races Pre-programmed 5,4,1,0 ISAF start sequence with audible warning signals "Sync Button" for instant synchronisation if gun is missed
