Grand Seiko Hi-Beat Mechanical Tentagraph – 43.2 mm

Reference Number
SLGC001G

High-beat precision and three days of power reserve come together in the new Tentagraph, Grand Seiko’s first mechanical chronograph.

TECHNICAL SPECIFICATIONS

Exterior
Case back: See through Screw Back
Glass Material: Box shaped sapphire crystal
Glass Coating: Anti-reflective coating on inner surface
LumiBrite: Lumibrite on hands and index(es)
Case size: Diameter 43.2mm Lug-to-lug 51.5mm Thickness 15.3mm
Band width: 23mm
Clasp type: Three-fold clasp with push button release

Movement
Caliber no.: 9SC5 Instructions
Movement Type: Automatic with manual winding
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.

Functions
Water resistance: 10 bar
Magnetic resistance: 4,800 A/m

Other details / Features:
Screw-down crown
Allergy-safe metal
Chronograph with 30 minutes & 12 hours