PRODUCT DESCRIPTION & FEATURES
This Sturmanskie Open Space Day-Date NH36/1899773B is a men’s automatic wristwatch from the “Open Space” collection, inspired by Soviet space exploration and the historic first spacewalk by Alexei Leonov. The model features a stainless steel case with rose-gold PVD coating, a space-themed engraved caseback, and a classic day-date dial layout.
Series: Open Space Day-Date
Model: NH36/1899773B
Limited Edition: 3000 pcs (limited production, engraved on caseback)
MOVEMENT
Movement: Seiko NH36 automatic mechanical
Shock Resistance: Yes
Frequency: 21,600 vibrations per hour
Power Reserve: ~41 hours
Calendar: Day + date display
Winding: Automatic self-winding + manual winding
CASE & BUILD
Case Material: Stainless steel with rose-gold PVD coating
Case Shape: Round
Case Size: 42 mm
Case Thickness: ~12–13 mm
Case Back: Engraved space-themed astronaut relief
Weight: ~120–160 g (depending on bracelet version)
Band Type: Bracelet
Band Material: Stainless steel with PVD coating
Lug Width: 22 mm
CRYSTAL & DIAL
Crystal: Mineral glass
Dial Type: Analog day-date dial
Luminescence: Super-LumiNova on hands and indices
BEZEL & FUNCTIONS
Functions: Hours, minutes, seconds, day, date
Bezel: Fixed
PROTECTION & RESISTANCE
Water Resistance: 50 m / 5 ATM
USAGE & CARE
Mechanical automatic watch designed for everyday and space-themed collection use. Avoid strong magnetic fields, impacts, and water exposure beyond WR50 rating. Adjust calendar functions outside the restricted time window (approx. 22:00–02:00).
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