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Description
Ronstan Clearstart 50mm Sailing Watch - BlackProduct Description Ronstan Clearstart 50mm Sailing Watch Black Features: Specialist RACE MODE Features including: Multiple Start Sequence options World Sailing 5,4,1,0, Match Racing, User Set Synchronization function resynchronise if you start the countdown early or late Multi line display Start Sequences + Time Loud intuitive count down and start sound signals Countdown repeat or Countdown and up options (for elapsed race time). Separate fast access
Product Description
Ronstan Clearstart 50mm Sailing Watch - Black
Features:
Specialist RACE MODE Features including:
Multiple Start Sequence options - World Sailing 5,4,1,0, Match Racing, User Set
Synchronization function - resynchronise if you start the countdown early or late
Multi-line display - Start Sequences + Time
Loud intuitive count down and start sound signals
Countdown repeat or Countdown and up options (for elapsed race time).
Separate fast access Race and Time mode scrolling
Water resistant to 5 ATM (50m/150ft)
STANDARD Features including:
Time, hours/minutes/seconds - 12 or 24hr 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
Durable, ultra-clear mineral crystal lens
Comfortable and secure silicon band
Reinforced polycarbonate case
50mm (2") diameter face
Oversized 13mm (1/2") digit display
Textured easy-find buttons
Stainless steel buckle with silicon band retainer
Stainless steel back
Innovative Race Functions with Bold New Styling
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™.
Large Quick View Displays
The entire ClearStart™ range features oversized digit displays for easy viewing. The Race Timer presents huge 16mm (5/8”) numbers that can be easily viewed by the crew when mounted to the boom or mast base. The 50mm Sailing Watch displays only slightly smaller 13mm (1/2”) digits, which can be quickly viewed at a glance without taking your hand off the helm, and the compact 40mm Sailing Watch still has impressive 10mm (3/8") digits.
Race Sequence Resynchronisation
All racing sailors know how hard it can be to get the watch going at the exact second the start sequence is commenced. With the handy SYNC function, you can quickly resynchronise the ClearStart™to the official race time. A simple press of a button allows you to drop down to the next minute, allowing you to get your starting sequence back in perfect SYNC at the next opportunity.
Pre-programmed Race Sequence Sounds
The intuitive ClearStart™ sound signals let you know exactly where you are in the start sequence without looking at the display. Pre-programmed with World Sailing 5-4-1-0 and Match Racing start sequences, it can also be programmed for other countdown sequences by the user. Sound signals can be turned off if desired.
End of Sequence - Countdown or Count Up
Depending on the user’s preference, the watch can be set up to auto repeat the countdown at the end of the sequence for general recall restarts, or to start counting up to track elapsed time.
Multi-line Display with Real Time
No need to switch between countdown and time modes because the actual time is displayed below the countdown time on the new multi-line ClearStart™ display.
Daily Life Functionality
From waking up for work to working out, a ClearStart™ watch is also great for everyday activities. Standard modes include 12 or 24 hour time format, date in day/month or month/day format, daily alarm and chronograph (stop watch).
Luminescent Backlight
Bright, full-face electroluminescent backlighting is easy to read at night and can be turned on temporarily for a quick view.
Water and Shock Resistant
Designed to survive the rigors of competitive sailing, ClearStart™ watches and timers are water resistant rated at 5ATM and highly shock resistant.
Features:
Innovative Race Functions with Bold New Styling
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™.
Large Quick View Displays
The entire ClearStart™ range features oversized digit displays for easy viewing. The Race Timer presents huge 16mm (5/8”) numbers that can be easily viewed by the crew when mounted to the boom or mast base. The 50mm Sailing Watch displays only slightly smaller 13mm (1/2”) digits, which can be quickly viewed at a glance without taking your hand off the helm, and the compact 40mm Sailing Watch still has impressive 10mm (3/8") digits.
Race Sequence Resynchronisation
All racing sailors know how hard it can be to get the watch going at the exact second the start sequence is commenced. With the handy SYNC function, you can quickly resynchronise the ClearStart™to the official race time. A simple press of a button allows you to drop down to the next minute, allowing you to get your starting sequence back in perfect SYNC at the next opportunity.
Pre-programmed Race Sequence Sounds
The intuitive ClearStart™ sound signals let you know exactly where you are in the start sequence without looking at the display. Pre-programmed with World Sailing 5-4-1-0 and Match Racing start sequences, it can also be programmed for other countdown sequences by the user. Sound signals can be turned off if desired.
End of Sequence - Countdown or Count Up
Depending on the user’s preference, the watch can be set up to auto repeat the countdown at the end of the sequence for general recall restarts, or to start counting up to track elapsed time.
Multi-line Display with Real Time
No need to switch between countdown and time modes because the actual time is displayed below the countdown time on the new multi-line ClearStart™ display.
Daily Life Functionality
From waking up for work to working out, a ClearStart™ watch is also great for everyday activities. Standard modes include 12 or 24 hour time format, date in day/month or month/day format, daily alarm and chronograph (stop watch).
Luminescent Backlight
Bright, full-face electroluminescent backlighting is easy to read at night and can be turned on temporarily for a quick view.
Water and Shock Resistant
Designed to survive the rigors of competitive sailing, ClearStart™ watches and timers are water resistant rated at 5ATM and highly shock resistant.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 3
Hard to install as instructed.
Size: 32 oz
Nearly impossible to get it in the tire through the valve. Yes I removed the valve core.
Broke the bead on the tire and dumped it in. That worked great! So far no leaks.
They should definitely redesign the installation method.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 5
Been using it for 15 years! Not sure where the Neg reviews come from?
Size: 16 oz
I've been using Liquitube since around 2010. I use it religiously in my ATVs and lawn tractor tires. Since I've been using this stuff, I've never had a flat before. I've pulled out nails and slivers of steel out of my ATV tires but yet none of them lose air or go flat.
I think some of the negative reviews come from improper use of the product or not enough of the product is being used in the tires. I think this come from variance in formula charts that Liquitube has had in the past on their bottles and on their website. The chart on their website wouldn't match the formula that was provided on the bottle. So I think alot of people get mixed up and not knowing the correct amount to add to each tire. Now Liquitube just puts pictures on the side of the bottle with an ounce measurement below each picture to tell people how to use it. But even that can be confusing. For instance, take the picture of the ATV that they show. Below the ATV it says 32oz. Now some people probably think the 32oz is for the entire ATV. Well that isn't the case. They want you to use 32oz Per Tire! Years ago Liquitube even used to say on the bottle to use 32oz per tire on an ATV. Now they just show a picture with an amount below it.
Now you'll come to find out that the 32oz they recommend doesn't match up to the formula they tell you to use to calculate how much each tire is supposed to get. So if you use the formula provided, you come to find that it calculates out to use less product per tire than what the bottle tells you to use. So that's very confusing as well.
So if you use it long enough, you'll be able to know how much each tire will need from experience. Just make sure there's enough on the inside of the tire to coat the entire inside as well as leaving a bit left over to circulate in the tire so it can be ready for a large puncture if that ever happens.
All in all, it's a good product that does what it claims. It lasts for as long as the tire does and it doesn't freeze up in the cold either! 5 stars!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
★★★★★ 5
Worked on slow leak… one month already!!!
Style: 18oz
Edit: Still holding proper pressure at 2-months !!!
Had a slow leak where my tire went from 44psi to ~18psi over 2-3 days… Dashboard light would let me know every few days that I had a tire problem and I would inflate the tire back up to 44psi… Anyway, I used this product and filled air back to 44 psi and it’s held the pressure for a month already !!!! Be sure to deflate tire to ~15 PSI before adding the product… it only took about 30 seconds to empty the container into my tire with the tire pressure low. Very happy with this product !!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 5
Excellent stuff!
Style: 18oz
Used this on a Z-Trac with a flat and it fixed it and has held up for over 8 months.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Greats stuff
Style: 14oz
Works super, has kept air steaycfor over 6 months, no leaks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
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