Grand Seiko 60th Anniversary Limited Edition Professional Diver's 600M

Grand Seiko (Grand Seiko) introduced a new generation of Spring Drive movement, which is thinner, more precise, and has a greater power reserve. The 9RA5 movement has elevated the Spring Drive technology to a new level and opened a new era in the history of Seiko.

Exterior
Case Material : High-intensity titanium
Glass Material : Sapphire crystal
Lumi Brite : Lumibrite on hands, indexes and bezel
Case size : Diameter 46.9mm × Thickness 16mm
The perimeter of Band : 202mm
Clasp type : Three-fold clasp with secure lock & push button release, solid & slide adjuster

Movement
Caliber no. : 9RA5 Instructions
Movement Type : Spring Drive
Accuracy : ±0.5 second per day (±10 seconds per month)

Functions
Water resistance : 600m / 2000ft for saturation diving
Magnetic resistance : Equipped
Weight : 164.0 g
Other details / Features :
・Case back with lion emblem
・Date display
・LIMITED EDITION on the case back
・Power reserve display
・Screw case back
・Screw-down crown
・Serial number engraved on the case back
・Stop second hand function
・Unidirectional rotating bezel