Size: Case: Approx. dia. 39mm / Case Thickness: Approx. 8.4mm, Including the Case and Belt Approx. 23.5cm / Wrist Circumference: Approx. 13-17cm Material: Case: Stainless Steel / Belt: Cow Leather Features: Movement: TMI's Quartz Type (battery type) / Water-resistance: 5 units of pressure (Daily life use strengthened water-resistance)