Skip to content Skip to navigation menu

RONSTAN Clear Start™ Race Timer

Model # 15215254Mfg # RF4050


Customer Reviews
In stock online.

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 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Sort by

Displaying reviews 1-2

Back to top

(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



      Best Uses

        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 1-2

        Back to top