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Strat-o-timer GMT: Dark Night (Sapphire Bezel)
Lugs stay on wrists from about 6.25 in (lug-to-lug rule of thumb)
From Jack Mason
The Strat-o-timer GMT celebrates one of the most iconic watches in history. Housing the highly anticipated Miyota 9075 automatic GMT movement, the Strat-o-timer marks the beginning of a new era of GMTs that features a jumping local hour hand. With a vision of becoming a legacy brand in our home state of Texas, the Strat-o-timer is assembled, and the movement regulated, in the USA.
Specifications
Details and photos come from Jack Mason’s website, last checked Oct 26, 2026. Specs were read automatically and may contain mistakes.
Case
- Diameter
- 40 mm
- Lug-to-lug
- 47 mm
- Thickness
- 13.2 mm
- Thickness incl. crystal
- Not listed
- Lug width
- 20 mm
- Material
- 316L steel
Movement
- Type
- Automatic
- Caliber
- Miyota 9075
- Power reserve
- 42 h
- Functions
- Not listed
Crystal and bezel
- Crystal
- Sapphire
- Bezel
- Not listed
Water resistance
- Rated to
- Not listed
Dial and lume
- Dial
- Not listed
- Lume
- Swiss Super-LumiNova®
Strap
- Strap
- Not listed
Every spec Jack Mason lists
- Lume
- Swiss Super-LumiNova®
- Bezel
- 48-Click Sapphire
- Clasp
- On the fly micro-adjust
- Crown
- Screw-down
- Rotor
- Custom branded rotor
- Width
- 20mm > 16mm taper
- Jewels
- 24
- Weight
- 160g (including bracelet)
- Accuracy
- +/-5 seconds per day (regulated by Jack Mason)
- Caseback
- Sapphire Exhibition
- Features
- Hours, Minutes, Running Second, GMT Hand, Date
- Material
- 316L Stainless Steel
- Movement
- Miyota 9075
- End Links
- Solid with quick-release
- Lug Width
- 20mm
- Lug to Lug
- 47mm
- Crystal Type
- Sapphire
- Depth Rating
- 20ATM, 200m
- Case Diameter
- 40mm
- Case Material
- 316L Stainless Steel
- Compatibility
- 20mm Straps
- Movement Type
- Automatic Flyer GMT with Jump Hour
- Power Reserve
- 42 hours
- Case Thickness
- 13.2mm
- Strat-o-timer GMT
- Dark Night (Sapphire Bezel)
- Vibration Frequency
- 28,800 vph
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