The WinDesign watches are extremely popular and used by many Olympic sailors. EX3015 has no start timer and no sync.
Watches are 100 m water resistant with the following features:
1. ABS case with Stainless Steel cover.
2. Stainless Steel caseback.
3. PU Strap.
4. Dual Time function.
5. Day, Date, Time (12 or 24-hour format).
6. Daily Alarms.
8. EL Backlight.