SPECIFICATION: MovementAutomatic ( Miyota ) 8215 Case Material316L Stainless Steel / Brass Case diameter38.0mm Case Length46.0mm Case Thickness13.55mm Case FinishingBrush & Shiny finishing Case backStainless steel, screw down Strap MaterialStainless steel bracelet Metal Bracelet Size20 mm GlassDouble domed / Acrylic Crystal Water Resistance10 ATM