Ronstan ClearStart Sailing Watch RF4055B – 50mm Blue

The Ronstan ClearStart RF4055B Sailing Watch (50mm Blue) is a race-optimized timepiece trusted by competitive sailors worldwide. With its large 50mm case, this model delivers superior visibility, intuitive operation, and all the race-timing features serious sailors need.

It includes a synchronized countdown timer, pre-programmed ISAF start sequences, audible alerts, and a multi-line display for clear viewing of time and countdowns simultaneously. Built for tough marine conditions, the RF4055B is water-resistant to 50 metres, shock-resistant, and fitted with a durable blue silicone strap for comfort and standout style on the water.

Ideal for club, keelboat, or dinghy racing, it’s a reliable tool to keep you race-ready at every start line.

✅ Key Features

• Size: 50mm – oversized digits for enhanced readability

• Functions: Countdown timer, sync, recall, start sequences

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

• Durability: Shock-resistant with marine-grade construction

• Strap: High-visibility blue silicone

• Best For: Yacht and dinghy racing, regattas, club fleets

• Brand: Ronstan – trusted timing gear for performance sailors