JD/GM Factory GMT-Master II SA3285 904L SteelMOVEMENT: Asian Clone 3285 Automatic Movement at 28800 vphCASE DIAMETER: 40mmTHICKNESS: 12.1mmDIAL COLOR: Black Dial - Superlume AppliedCASE MATERIAL: High Grade Solid Stainless Steel 904L (Rehaut at 6:00 has rando..