Brand: Tissot. Model: PRX Powermatic 80. Reference: t137.407.16.041.00 or T1374071604100 (also known as). Dial color: Blue. Case material: Stainless Steel. Strap material: Alligator leather. Crystal: Scratch Resistant Sapphire. Movement type: Automatic with Powermatic 80 calibre movement ensuring an exceptional power reserve of up to 80 hours. Functions include Hour, Minute, Second, and Date display. Case shape: Tonneau. Dimensions: Size approximately 40mm x 39.50mm (case diameter by width). Thickness: 10.9mm. Water resistant to 100 meters / 330 feet.