Raketa Medical Pulsometer, NOS, Quartz Watch, Rare USSR Vintage WatchThis watch has a special scale for heart rate measurement. To measure heart rate, start counting pulsations at 60 or 30 seconds and when pulsation reached 15 pulses just read on the scale your heart rate. The watch dates back to the 1980s, giving it a unique and retro appeal that vintage enthusiasts will adore. The quartz movement ensures that the watch is accurate and precise, keeping you on time and on schedule. Year: 1980's Case size: 34 mm