BOS Watch Men's Mechanical Self-Wind Wheel Dial Stainless Steel Waterproof Watch Leather Band Imported Automatic mechanical movement Gold tone with soft calfskin Band, Lovely small dial on the bottom of case, two wheels on the middle right and left. Can see the movement work clearly, it is funny. Protective Synthetic-sapphire crystal dial window,Soft Calfskin band with stainless steel buckle, easy to use and comfortable wear Case diameter: 41 mm, Case thickness: 11mm, Band Width: 20mm, Weight: About 128g Water resistant to 165 feet (50 M),Withstands rain and splashes of water.