Description: Automatic Mechanical wrist watch for mens, Luxury, fashion and classic style Self-winding mechanical watch, no battery needed, which is very environmental friendly. Installed Tourbillion , which makes the watch works well and ensure the time precise Scratch-resistant Synthetic Sapphire lens and 30m(3ATM/98FT) waterproof, Luminous and moon, multifunction Unique Butterfly buckle strap, it is very easy to adjust to fit your wrist Material: Synthetic sapphire glass , solid stainless steel strap , makes the watch more durable Specification: Material: Stainless Steel( Belt), Mineral Glass( Mirror), Alloy( Case) Case Diameter: approx. 39mm/1.53inch, Case Thickness: approx. 14mm/0.55inch Watch Band Length: approx. 200mm/7.87inch Watch Band Width: approx. 20mm/0.78inch Watch Net Weight: approx. 127g Package Includes: 1 Piece Tevise Automatic Watch