Sturmanskie Open Space GMT NH34/1899058B Mechanical Automatic Limited Edition Watch

PRODUCT DESCRIPTION & FEATURES

This Sturmanskie Open Space GMT NH34/1899058B is a men’s automatic GMT wristwatch from the “Open Space” collection, inspired by Alexei Leonov’s first spacewalk during the Voskhod 2 mission. The model features a stainless steel case with rose-gold PVD coating and an engraved astronaut motif on the caseback.

Series: Open Space GMT
Model: NH34/1899058B
Limited Edition: 3000 pcs (engraved on caseback / confirmed as limited run)

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MOVEMENT

Movement: Seiko NH34 automatic GMT
Shock Resistance: Yes
Frequency: 21,600 vibrations per hour
Power Reserve: ~41 hours
Calendar: Date display
Winding: Automatic + manual winding
GMT Function: Yes (dual time zone 24h hand)

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CASE & BUILD

Case Material: Stainless steel with PVD coating
Case Shape: Round
Case Size: 42 mm
Case Thickness: ~12–13 mm
Case Back: Engraved astronaut relief (spacewalk theme)
Weight: ~120 g (varies slightly by bracelet/strap version)

Band Type: Bracelet / strap (variant dependent)
Band Material: Stainless steel or leather (depending on version)
Lug Width: 22 mm

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CRYSTAL & DIAL

Crystal: Mineral glass
Dial Type: Analog GMT dial
Luminescence: Super-LumiNova on hands and indices

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BEZEL & FUNCTIONS

Functions: Hours, minutes, seconds, date, GMT (second time zone)
Bezel: Fixed

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PROTECTION & RESISTANCE

Water Resistance: 50 m / 5 ATM

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USAGE & CARE

Mechanical GMT watch designed for everyday and travel use. Avoid strong magnetic fields, impacts, and water exposure beyond WR50 rating. GMT function is intended for tracking a second time zone and should be adjusted according to manufacturer instructions.