MOVEMENT:Dandong 4801 Automatic Movement. CASE DIAMETER:40mm THICKNESS:12.5mm DIAL COLOR:Skeleton Dial with Red Hands CASE MATERIAL:Black Forged Carbon Case BRACELET:Nylon Strap with Fold Over Buckle FRONT GLASS:Scratch-proof Sapphire Crystal CASE BACK:Solid Case Back BEZEL:Carbon Bezel CLASP TYPE:Fold Over Buckle