The solid stainless steel case is home to an ST-90089A automatic movement, which is showcased in the skeletonized dial. The movement plate is decorated with a richly engraved scrollwork pattern. Case: Rose tone Caseback: Rose tone , screw-down Bezel: Rose tone Dial: Gray Hands: Black Markers: Roman numerals Strap: Brown, leather Clasp: Tang buckle Crystal: krysterna Crown: Push/pull Movement: Automatic Water resistance: 5 ATM/50 meters/165 feet Case measurements: 42mm wide x 42mm long x 11.5mm thick Strap measurements: 22mm wide x 9 inches long Box measurements: 3 inches wide x 3 inches high x 12 inches long Model: MW585S04O All measurements are approximate and may vary slightly from the listed dimensions. Men's watch bands can be sized to fit 7.5-inch to 8.5-inch wrists. Click here to view our Watch Sizing Guide . Automatic movement winds with the movement of your arm. It is recommended that you wind the watch every two weeks.