Sturmanskie Open Space Day-Date NH36/1891771B Mechanical Automatic Watch

PRODUCT DESCRIPTION & FEATURES

This Sturmanskie Open Space Day-Date NH36/1891771B is a men’s automatic wristwatch from the “Open Space” collection, inspired by Soviet space exploration and the first human space missions. The model is powered by the Seiko NH36 automatic mechanical movement and features a stainless steel case with blue dial accents, engraved space-themed caseback, and practical day-date functionality.

Series: Open Space Day-Date
Model: NH36/1891771B
Limited Edition: 3000 pcs

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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

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CASE & BUILD

Case Material: Stainless steel
Case Shape: Round
Case Size: 42 mm
Case Thickness: ~13 mm
Case Back: Engraved astronaut / space-themed caseback
Weight: ~110–120 g

Band Type: Bracelet
Band Material: Stainless steel
Lug Width: 22 mm

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CRYSTAL & DIAL

Crystal: Mineral glass
Dial Type: Analog 12-hour day-date dial
Luminescence: Super-LumiNova on hands and hour markers

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BEZEL & FUNCTIONS

Functions: Hours, minutes, seconds, day, date
Bezel: Fixed

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PROTECTION & RESISTANCE

Water Resistance: 50 m / 5 ATM

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USAGE & CARE

Mechanical automatic watch designed for everyday and travel use. Avoid strong magnetic fields, severe impacts, and water exposure beyond WR50 rating. Adjust the calendar outside the restricted time window (approximately 22:00–02:00).