Description
Grand Seiko Sports Divers – SBGH291G 43.8mm Mechanical Hi-Beat Watch
Grand Seiko Mechanical Hi-Beat Diver’s
Specifications
Exterior
- Exterior: High-intensity titanium
- Case back: Screw case back
- Glass Material: Sapphire crystal
- Glass Coating: Anti-reflective coating on inner surface
- LumiBrite: LumiBrite on hands, index(es) and bezel
- Case size: Diameter 43.8mm Lug-to-lug 51.0mm Thickness 14.7mm
- Band width: 22mm
- Clasp type: Three-fold clasp with secure lock & push button release, solid & slide adjuster
- The perimeter of Band: 190mm
Movement
- Caliber no.: 9S85 Instructions
- Movement Type: Automatic with manual winding
- Power reserve: Approx. 55 hours
- Mean daily rate: +5 to -3 seconds per day (Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.)
- Normal Usage Accuracy: +8 to -1 seconds per day
Functions
- Magnetic resistance: 4,800 A/m
- Weight: 142 g
- Unidirectional rotating bezel
- Screw-down crown
- Three-fold clasp with secure lock
- 37 jewels
Reference: SBGH291G