Grand Seiko Mechanical Hi-Beat 200m Diver’s Watch – 43.8 mm

Reference Number
SBGH289G

TECHNICAL SPECIFICATIONS

Exterior
Exterior: Stainless steel
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: 206 g

Other details / Features:
– Unidirectional rotating bezel
– Screw-down crown
– Three-fold clasp with secure lock
– 37 jewels