Description: From J12 Factory Case: Solid 316L Stainless Steel Case, Ceramic Crown And Pusher Movement: Asian 7750 Chronograph Movement, 28800Bph, Second At 12 And Working Regulator Dimensions: 42Mm X 16Mm Crystal: Scratch-Proof Sapphire Crystal With Colorless Ar Coating Strap / Bracelet: Bracelet