Rare Vintage Breitling Sprint Mechanical Stopwatch Precise Swiss Line

Lovely Breitling Sprint Line Pocket Watch. Working as it should. Please study the photos and video and ask for more if needed... The item is a vintage, mechanical, hand-wound stopwatch typically associated with the Breitling "Sprint" line, which was prominent in the mid-to-late 20th century (often 1960s or 1970s). These were often used for timing sporting events, such as rally racing, track and field, or industrial/scientific applications where precise, portable timing was needed. Brand/Model Marking: The word "SPRINT" is clearly printed in capital letters on the white dial, indicating the model line. Vintage Breitling "Sprint" stopwatches are known to exist. Dial: It has a clean, white dial with two main timing scales: Outer Scale (Seconds/Sub-Seconds): This is the main timing track. It's marked for seconds (0 to 60) and is subdivided to allow reading of fractions of a second. Inner Scale (Minute Counter): There is a smaller sub-dial (or register) located at the 12 o'clock position. The scale on this sub-dial typically counts the elapsed minutes, usually up to 30 or 60 minutes. In the photo, the scale appears to be numbered 3, 6, 9, 12, etc., likely counting up to 30 minutes in 1-minute increments. Crucially, the smallest hash marks on the outer track determine the stopwatch's precision. Although not completely clear, Breitling Sprint models were commonly $\frac{1}{5}$th or $\frac{1}{10}$th of a second stopwatches. The markings appear to divide each second into small increments, consistent with a high-precision mechanical timer. In summary, this is a classic Breitling Sprint mechanical stopwatch, designed for precise measurement of elapsed time, typical of mid-century Swiss timing instruments.