Paul Perret Swiss Chronograph Gaston Mens Watch True Chronograph Functions (Large 3rd Hand, 60 second & 10 hour subdials), Visible Date Window, Multi-Textured Dial Design, Tachymeter Chapter Ring; Case Dimensions 45mm x 54mm x 13mm Surgical Grade 316L IP Stainless Steel Case and Bezel, Stainless Steel Pressure Sealed Back, Two Chronograph Pushers, Knurled Push/Pull Crown, Water Resistant to 5ATM(50m or 165ft) Genuine Leather Strap, Surgical Grade 316L Stainless Steel Buckle; Band Dimensions 201mm x 21mm Sapphire Coated Mineral Crystal Swiss Ronda 5040.D