Stainless Steel Case Stainless Steel Bracelet "Eco-Drive" solar powered generating system, no need to change the battery. Black Dial Luminous Hands and Markers Chronograph Function Tachymeter Mineral Glass 100M Water Resistant Date display 4 o'clock position 12/24 Hour Time Screw Case back Case Diameter : 45mm (with Crown) Case Diameter : 41.5 (without crown)