Weight: 145g (0.32 lb) Case Diameter: 39.7mm (1.56 in) Case Thickness: 11mm (0.43 in) Material: Stainless Steel Construction Crown: Push-Pull Crystal: Synthetic sapphire crystal with AR/AF coating, scratch-resistant Additional Feature: Japanese Miyota 8215 Automatic Mechanical Movement Water Resistance: 100M (10 BAR) Movement: Japan Automatic Miyota 8215 Strap Width: 20mm (0.78 in) Strap Length: 21cm (8.26 in) Lug to Lug: 50mm (1.96 in)