Ronstan ClearStart Sailing Watch RF4055A – 50mm Black

The Ronstan ClearStart RF4055A Sailing Watch (50mm Black) is a full-sized, race-ready timepiece designed for competitive sailors who demand visibility, precision, and reliability. With its 50mm case, large digits, and multi-line display, this watch provides easy access to countdowns and time data during even the most intense race starts.

Packed with features like pre-programmed start sequences, synchronised countdown timer, recall, and audible alerts, it helps you stay perfectly timed to the start line. Built for the marine environment, the RF4055A is water-resistant to 50 metres, shock-resistant, and finished with a sleek, durable black strap.

Whether racing dinghies, keelboats, or offshore, this watch is a professional-grade companion for any sailor.

✅ Key Features

• Size: 50mm – large, race-optimized display

• Functions: Countdown timer, sync, pre-set sequences, recall

• Water Resistance: 50m – suitable for active marine use

• Durability: Shock-resistant with rugged black housing and strap

• Display: High-contrast multi-line for real-time race visibility

• Best For: Club racing, keelboats, dinghies, offshore sailors

• Brand: Ronstan – trusted by sailors worldwide for race timing precision