Grand Seiko SBGH341 Heritage Collection

Exterior

Exterior:    High-Intensity Titanium
Case back:    See-through & Screw case back
Glass Material:    Box shaped sapphire crystal
Glass Coating:    Anti-reflective coating on inner surface
Case size:    Diameter 38.0mm Lug-to-lug 44.7mm Thickness 12.9mm
Band width:    20mm
Clasp type:    Folding clasp with push button release
The perimeter of Band:    197mm

Movement

Caliber no: 9S85 Instructions
Movement Type: Self-winding 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

Water resistance: 10 bar
Magnetic resistance: 4,800 A/m
Weight: 98 g
Other details / Features :    
- Screw-down crown
- Allergy-safe metal
- 37 jewels