316L Surgical-Quality Stainless Steel Case Jeweled Seiko NH35A Automatic Movement Jewel Bearings: 24 Jewels 42 Hour Power Reserve Beats per Hour (BPH): 21600/Hour Sapphire-Coated Mineral Crystal Observation Caseback to View Movement Logo-Engraved Crown Canvas-Overlaid Genuine Leather Strap Logo-Engraved Stainless Steel Clasp Luminous Hands Luminous Markers Date Display 43mm Case Diameter 10 ATM Water Resistance