RF4055 ClearStart 50mm Sailing Watch - Red/Grey Innovative Race Functions with Bold Styling Ronstan has taken the popular 50 mm (2") size and features you love and added more durability, comfort, and ease of use to our design. Ronstan’s ClearStart race timer and watches combine contemporary styling with true sailing functionality. They feature large buttons, easy to read displays and advanced intuitive programming designed specifically with the racing sailor in mind. Developed with input from some of the world’s top sailors, ClearStart watches and timers are sure to set the standard for years to come. If you’re looking for a simple competitive edge, the difference is ClearStart. Features: Acrylic lens replaced by mineral crystal lens for improved clarity and durability Lens recessed in the case to improve impact resistance Glass-reinforced polycarbonate case now more durable A more flexible injection molded silicone band, which is more comfortable and more durable Lower profile and textured "easy-find" buttons Bold styling helps the 50mm ClearStart range stand out from the crowd Time, hours/minutes/seconds – 12 or 24 hour format Month/day or day/month format Daily alarm Chronograph - including hours and time of the day Luminescent backlight Battery saving mode – light can be turned off Shock resistant Specifications: Time, hours/minutes/seconds – 12 or 24 hour format Month/day or day/month format Daily alarm Chronograph - including hours and time of the day Luminescent backlight Battery saving mode – light can be turned off Shock resistant Race Mode: Multiple start sequence options – World Sailing 5,4,1,0, match racing, user set SYNChronization function – resynchronize if you start the countdown late Multi-line display – start sequence + time Loud intuitive countdown and start sound signals Countdown repeat, or count down and up (for elapsed race time) Separate fast access race and time mode scrolling Water resistant to 5 ATM (50m/150ft) The RF4055 models will have the popular ClearStart race sequence functions, as well as daily-life functionality. This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.