Vostok 710059 Amphibian Military Russian Scuba Dude Diver Watch - Blue                                              Mechanical mechanism "Vostok 2416B".
The number of stones is 31.
Automatic winding.
Instant action calendar.
The central second hand.
Shockproof device of the balance node.
Case: Stainless steel (case, time dial, crown, watch back cover). 
Organic glass.
Water protection: 20 atmospheres (200 meters).
Stainless steel bracelet.
The energy reserve of one spring plant is at least 31 hours.
Average daily stroke: -20... 60 seconds per day.
The average service life of the mechanism is 10 years.