Suunto M3 not only displays the time to the start line to help you cross the line at just the right moment, but also by using the boat's compass and M3's rotating bezel you can determine the favoured end. Lound signals and large numbers, together with a race timer for easy synchronizastion with the race committee - just a few of the many functions. Time, Date, Dua-Time, 3 Alarms sailing timer adjustble from 1 to 99 hours. Synchronization down to the next minute or orund to the closest minute. Stop/Resume countdown. smart repeat, Countdown timer lock to prevent accidental off sync. Audible countdown alarms. Independent chrono in addition to countdown timer. Large countdown numbers and time of day or chrono shown at the same time. Rotating bezel with 0-360 degree scale.