The watch was produced in two versions of the dial and hands: White paint (under red light). In this case, on the dial after the hour number there is an index “K” (АЧС-1, АЧС-1М, АЧС-1МН), under white light illumination (index “B”) - АЧС-1МН Light mass of temporary action. In this case, the index “B” is placed on the dial after the hour number (AChS-1, AChS-1M) The deviation of the clock readings from the exact time (daily variation) does not exceed ±20 s Duration of watch operation from one complete winding is 3 days Frequency of setting the clock once every 2 days Working voltage circuit of the electric clock heater AChS-1, AChS-1M (direct current) (27±2.7) V; AChS-1MN (27±6) V. Ohmic resistance of the electric heater 50±2 Ohm The power supply voltage for the built-in backlight in the AChS-1MN watch is 5.5 V from an alternating current network with a voltage of 400 Hz. Probability of failure-free operation of the watch for 2000 hours at a temperature of 20±5 °C is not less than 0.94 The weight of AChS-1, AChS-1M watches is no more than 655 g, AChS-1MN - 750 g. Overall dimensions of watches AChS-1, AChS-1M 85x91.4x91.4 mm; AChS-1MN Ø 85x91.4x89.1 mm The clock is controlled by two heads: The left (winding) red crown is intended for winding the watch and moving the hands, starting, stopping and returning the hands of the flight time mechanism to the initial position. The watch is wound by rotating the crown counterclockwise. The head does not rotate in reverse. The hands are turned by pulling the crown all the way and rotating it counterclockwise. The time of flight mechanism is started by pressing the crown (until it clicks). In this case, a red signal is visible in the rectangular hole of the dial (for watches with the index “B”) (АЧС-1, АЧС-1М) or gray (for watches with the indexes “К” and “B”) (АЧС-1, АЧС- 1M, AChS-1MN). The flight time mechanism is stopped by pressing the crown a second time. At the same time, a signal of two colors is visible in the hole of the dial: red and luminous mass The hands of the flight time mechanism are returned to the initial position by pressing the left crown a third time. The right head (with the pointer arrow) is designed to start and stop the watch, as well as start, stop and return the stopwatch hands to the initial position. Starting and stopping the watch is done by turning the crown in the direction of the arrow pointer on it (or counter-arrow). Starting, stopping and returning to the initial position of the stopwatch hands is carried out by successive pressing of the crown. Large scale - for counting time in hours, minutes and seconds for AChS-1 watches and for counting time in hours and minutes and stopwatch operating time in seconds for AChS-1M, AChS-1MN watches Scale "FLIGHT TIME" - for counting flight time in hours and minutes for AChS-1, AChS-1M and AChS-1MN watches Scale "SEC" (stopwatch) - for counting the operating time of the stopwatch in minutes for watches AChS-1M, AChS-1MN, in minutes and seconds - for watches AChS-1 ATTENTION ! Parcels are sent from the territory of Ukraine and Poland, taking from 12-21 days. When sending a lot from the territory of Ukraine, there are NO additional costs. VAT - WILL NOT BE