Rare Medical Stopwatch With Heart Rate Scale - USSR ,1970s Material of case : metal case Type of movement: mechanical, manual winding Movement caliber : russian stopwatch movement Cal. 42613,16 jewels Case diameter : 77 mm without crown Case diameter incl. crown : 83 mm Case thickness : 18 mm Dial : dial with heart rate scale
Watch is professionally serviced and in good working condition. Shipping via registered mail with tracking.