Model : 18K Rose Gold Plated Polished 316F Stainless Steel Casework, White / Black Dial, Leather Strap with with Insignia BuckleMovement: Nickle Plated Japanese Miyota 9015 Automatic Movement,21J, 28800bph, Insignia Rotor,Functions: Hours, Minutes, Seconds, Date at 6.00 Blue Dimensions : Dia 42mm x 11mmMaterial : 1 piece 316F Forge Stainless Steel Casework, 18K Rose Gold Plating.. 5 Mils Back : Display Caseback with Serial Engraving on Case rims... Crown : One-piece Screw down crown with o ring Crystal:Sapphire Crystal Water-Proof to 30m at Factory