Casio G-Shock MR-G 40th Anniversary Watch - MRGB2000SG-1AA deep layer hardening process and dark silver AIP are applied to the recrystallized titanium case to express the color of the Shougeki Maru: Gai helmet. An engraved metal plate commemorating the G SHOCK 40th anniversary on the case side at the 10 oclock position adds a touch of edgy styling, as do the four lab grown rubies*2 in the bezel symbolizing 40 years. Case size (L W H) 54. 7 49. 8 16. 9 mm Weight 150 g Case and bezel material Case bezel