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Clear Start™ Race Timer


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In stock online.
Model # 15215254 | Mfg # RF4050

Product Description

This popular race timer now features extra large silicone buttons, easy-to-read displays (5/8" numbers that can be easily viewed by the crew when mounted to the boom or mast base) and advanced racing programs. Handy SYNC function allows you to quickly resynchronize to the official race time. Race sequence sounds for ISAF 5-4-1-0, Match Racing and user-programmable starts. Standard modes include 12/24 hour formats, date, daily alarm and chronograph. Water-resistant to 50m (approx. 165') and shock-resistant. Luminescent backlighting. 1 3/16"W stretch nylon band with security loop. One-year warranty.

Large Quick View Displays: huge 16mm (5/8") numbers can be easily viewed by the crew when mounted to the boom or mast base.

Race Sequence Resynchronization:
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-programed Race Sequence Sounds: The intuitive Clear Start™ sound signals let you know exactly where you are in the start sequence without looking at the display. Pre-programmed with ISAF 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 Clear Start™ display.

Specialist RACE MODE Features including:

  •     Multiple Start Sequence options - ISAF 5,4,1,0, Match Racing, User Set
  •     SYNChronisation function - auto-correction if you start the coundown early or late
  •     Multi-line display - Start Sequences + Time
  •     Loud intiutive lead-up 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/150') - double gasket seals

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
  •     Large 65mm (2 9/16") diameter face
  •     Oversized 16mm (5/8") digit display
  •     Rotating face
  •     Wrist/Hull/Mast/Boom mount options
  •     30mm (1 1/18") wide stretch Nylon band with security loop
  •     Easy-use, flush fit buckle
  •     Dual batteries
  •     Extra-large easy-press silicon buttons - highlighted Start/Stop button


Clear Start™ Race Timer

Band Color Black
Band Material Nylon
Battery Type Lithium
Best Use Sailing/Navigation
Face Color Gray
Features Alarm
Shock Resistant
Water Resistant
Maximum Depth 50 Meters
Type Digital


by PowerReviews
Ronstan Clear Start Race Timer

(based on 6 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.


No Pros


No Cons

Best Uses

No Best Uses
    • Was this a gift?:
    • No (5)

Reviewed by 6 customers

Displaying reviews 1-6

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good item!

By cez

from new york

Verified Buyer

Comments about Ronstan Clear Start Race Timer:

good item

  • Was this a gift?:
  • Yes

Recommend - Easy to use!

By Johnny O

from Conover, NC

Verified Buyer

Comments about Ronstan Clear Start Race Timer:

Great start timer watch. Nice big easy to read numbers. Super easy to use, took me just 10 minutes to read the instructions and then I was off. Has worked out great in races. Just hit "Start" and the countdown begins with beeps at the right times. If you are off a bit, just hit "Synch" on the next horn. Once it counts down, starts tracking your race time automatically. If there is a general recall, just hit "stop" and "clear". Goes right back to the 5 min countdown. Has made starts so much easier for me, I single hand race a lot and having a separate timer was not working well. Having it on your wrist makes it easy. Love it!

  • Was this a gift?:
  • No

Not intuitive but great for 5 minute rolling starts

By SF Woody Sailor

from Sausalito, CA

Verified Buyer

Comments about Ronstan Clear Start Race Timer:

This watch is great for 5 minute rolling fleet race starts. Nothing better. However if you want to shift modes (say from 5 to 10 or from 5 rolling to time of day or from 5 rolling to elapsed or if the committee is putting a minute in between starts) the commands are not at all intuitive (to me), and good luck keeping hold of the tiny little manual in 6 point font! Just leave it in start mode and use another watch for everything else.

  • Was this a gift?:
  • No

works great - lost my last one

By bob96808

from sarasota

Verified Buyer

Comments about Ronstan Clear Start Race Timer:

works great - lost my last one

  • Was this a gift?:
  • No

(1 of 1 customers found this review helpful)


Improvement in features, step back in usability.

By Chris

from SFBay

Verified Buyer


  • Many features


  • Too complicated

Best Uses

  • Racing

Comments about Ronstan Clear Start Race Timer:

More features than previous model. Displays the time while in race more, so you don't have to switch back and forth anymore.
But buttons are ridiculously small. They look big, but they require a precise and strong push which make them hard to use. And changing from time mode to race more requires pressing two buttons simultaneously, which is hard to do with one hand.
Also you'd better not loose the user manual! Way too complex to use, and not intuitive at all as to what combination of buttons to press to change settings.
Sounds seems not as loud as my previous model, making the beeps harder to hear.

  • Was this a gift?:
  • No

(1 of 2 customers found this review helpful)


wrist clasp

By plow

from San Francisco, CA

Verified Buyer

Comments about Ronstan Clear Start Race Timer:

wrist clasp broke first time I tried to close it on board for first race. i need to return it for a store credit.

  • Was this a gift?:
  • No

Displaying reviews 1-6

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