My Account
Shopping Cart

Ronstan RF4055B ClearStart 50mm Sailing Watch Blue/Grey

Manufacturer

Ronstan

<h3>About Ronstan – A Legacy Built on the Water</h3><p>Few names in the sailing world carry as much weight as Ronstan. <strong>Founded in 1953</strong> by Ron Allat and Stan Lenepveu, the company began as a small boatbuilding operation in Highett, a suburb of Melbourne, Australia. What started as handcrafting custom yacht fittings for fellow sailors at the nearby Black Rock Yacht Club steadily grew into one of the most respected sailboat hardware manufacturers on the planet. The brand name itself is a nod to its founders — Ron and Stan — whose passion for sailing and precision craftsmanship shaped the company's DNA from day one.</p><p>Today, <strong>Ronstan International</strong> is a globally recognised manufacturer and supplier of sailboat hardware, rigging components, winches, sailing gear, and accessories, with its head office remaining in Braeside, Victoria, Australia. The company has established manufacturing facilities in Australia, Denmark, and Indonesia, along with sales offices in the United States, and distributes products to sailors in over 40 countries around the world. In November 2023, Ronstan joined <strong>Groupe Wichard</strong>, aligning with an industry leader whose portfolio spans more than ten world-renowned brands in the sailing and safety markets — a move that further strengthens Ronstan's global reach and product offering.</p><h3>Engineered for Every Sailor, Proven at the Highest Levels</h3><p>Ronstan's reputation spans the full spectrum of sailing — from first-time dinghy sailors to elite competitors at the America's Cup and Olympic Games. The brand serves as the official supplier to the Australian Sailing Team, and Ronstan hardware has appeared aboard medal-winning boats across multiple Olympic campaigns. That pedigree at the pinnacle of racing directly fuels the innovation available to everyday sailors: the demanding performance requirements of top-tier competition have driven many of the technical breakthroughs found throughout Ronstan's broader product range.</p><p>The company's catalog encompasses well over 2,000 products, including pulley blocks, traveller systems, furlers, rope cleats, stainless steel fittings, shackles, snap shackles, and winches. Whether you're outfitting a small racing dinghy, a family cruiser, or an offshore race yacht, Ronstan offers hardware designed and tested to perform in real-world conditions. Their in-house capabilities span design, engineering, precision injection moulding, CNC machining, metal pressing, and assembly — all of which contribute to the consistent quality sailors have come to expect from the brand.</p><h3>Top Ronstan Product Categories</h3><p>Among Ronstan's most popular product lines are their <a href="/11561-ronstan-tiller-extensions-accessories-202641">Tiller Extensions &amp; Accessories</a>, which encompass both their renowned carbon fibre and alloy tiller extension ranges. Whether you need a lightweight, rigid fixed-length stick or a telescopic option for adjustable reach, Ronstan's tiller extensions are engineered for decisive helm response and positive grip in all conditions. Complementing these are Ronstan's <a href="/11561-ronstan-tiller-extensions-accessories-201068">Tiller Extension Accessories</a> — including universal joints, retaining clips, and end knobs — that allow sailors to fine-tune their setup or replace worn components with ease.</p><p>Ronstan also produces a well-regarded line of <a href="/11561-ronstan-fairleads-201944">Fairleads</a>, designed to guide lines smoothly across a boat's deck. Available in UV-stabilised nylon and with optional stainless steel liners for added strength and longevity, these practical fittings are a staple of both dinghy and keelboat rigging setups worldwide.</p><h3>Why Choose Ronstan?</h3><ul><li><strong>70+ years of marine hardware expertise</strong> rooted in Australian sailing culture</li><li>Products trusted by Olympic sailors, offshore racers, and cruising sailors alike</li><li>Over 2,000 products covering everything from small dinghy fittings to superyacht systems</li><li>Advanced manufacturing across three international production facilities</li><li>Part of Groupe Wichard, adding complementary product depth and global support</li></ul>

Part Number

RF4055B
06/03/2036 9:22 AM
Sale Price

$89.54

In Stock (6)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Ronstan RF4055B ClearStart sailing watch combines advanced race timing functionality with bold, contemporary styling in a durable 50mm case. Designed specifically for competitive sailors with input from world-class racers, this watch features intuitive programming and large, easy-to-read displays that perform in demanding marine environments.

Enhanced Durability and Comfort:

  • Mineral crystal lens replaces acrylic for superior clarity and scratch resistance
  • Recessed lens design improves impact protection
  • Reinforced glass-filled polycarbonate case construction
  • Flexible injection-molded silicone band for all-day comfort
  • Lower profile textured buttons for easy operation with gloves
  • Water resistant to 5 ATM (50 meters/150 feet)
  • Shock resistant design

Race Mode Features:

  • Multiple start sequence options including World Sailing 5-4-1-0, match racing, and user-programmable sequences
  • SYNC function allows resynchronization if countdown is started late
  • Multi-line display shows start sequence and time simultaneously
  • Loud intuitive countdown and start sound signals
  • Countdown repeat or count down and up for elapsed race time tracking
  • Separate fast-access race and time mode scrolling

Daily Functionality:

  • 12 or 24-hour time format with month/day or day/month display
  • Daily alarm function
  • Chronograph with hours and time of day
  • Luminescent backlight with battery-saving mode

The RF4055B delivers the competitive edge serious sailors need with the reliability and ease of use that sets the ClearStart standard.

Products specifications

Battery Type

Lithium-ion

Case Material

Plastic

Face Color

Gray

Features

AlarmStopwatchLap TimerWaterproof

Type

Watches

Band Material

Silicone

Best Use

SailingNavigation

Maximum Depth

50 Meters

It could not have been easier.

Online ordering very swift.

Order was quick and easy, but will default to final receipt of the product for true shopping experience.

The shopping experience was wonderful

Great prices and cheap shipping:!

Best price and free shipping!

Easy

So far so good, best price I could find that actually had the part in stock

Thanks

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy