Small-size helicopter aviation watches (ChAM-V) (item 781)

Designed for: displaying the current time in hours, minutes and seconds, measuring flight time in hours and minutes, measuring short time intervals (up to 1 hour) in minutes and seconds. The product has several modifications: with white, red or green illumination of the scale with Russian or English inscriptions. One full (manual) winding of the spring is enough for continuous operation of "CHAM-V" for at least 48 hours. Accuracy of the product at full winding of the spring for 1 day of work, in normal climatic conditions, in the working position is not more than 20 sec. Reliability: service life of the product is 7.5 years of which 6 years of operation for intended use and 1.5 years of storage. Estimated probability of failure-free operation of the product should be P=0,98 for the operation time of 2000 hours. The product works and retains the characteristics of accuracy after transport and storage at t 50 0C and relative humidity up to 98% at t + 20 0C. (t operating range from - 40 0C to +60 0C) Gab. product 65h65h94 mm. Weight not more than 0,5 kg