This watch is designed to display the current time in hours, minutes, and seconds, and to measure short intervals of time (up to one hour) in minutes and seconds. It is used in geophysical equipment (type 60ЧП) and on marine equipment (type 61ЧП). In excellent condition!

It consists of a standard watch movement for keeping track of the current time and a stopwatch movement for measuring and counting short intervals of time. The standard watch movement operates continuously, while the stopwatch movement can be switched on and off.

The current time is measured on the large scale of the dial. The stopwatch readings are measured on the lower scale of the dial. When the movement is running, the hour, minute, and second hands move continuously. A full winding ensures the movement operates for three days. The watch should be wound once every two days.

The stopwatch movement is controlled by three positions of the "Start" crown: I - the movement is started by pressing the crown once; II - the movement is stopped by pressing it again; III - resets the hands to zero with a third press. Free-running, lever-operated; monometallic balance. The watch has a spring-driven, twin-barrel, parallel-action motor.

Technical Specifications

Daily movement at a temperature of (20 ± 5)°C: ± 40 sec. Balance oscillation period: 0.4 sec. Power reserve: 3 days. Number of jewels: 25. Dimensions of the 60ChP watch: 85 x 91.4 x 72.1 mm; 141 x 161 x 75 mm for the 61ChP watch. Weight: 600 g for the 60ChP watch; no more than 1,200 g for the 61ChP watch.

The probability of failure-free operation over 2,000 hours at a confidence level of 0.8 is 0.9.

The watch is vibration-resistant in the frequency range of 18  80 Hz with an acceleration of 1.5 g. Operate at ambient temperatures of -25 +50 °C and relative humidity of 95%