Features: Stainless Steel Case Leather Strap Automatic Movement Caliber: F6B22 22 Jewels Domed Mineral Crystal White Dial Analog Display Power Reserve Upto 40 Hours 12/24 Hours Display Luminous Hands And Markers Day And Date Display Pull/Push Crown See Through Case Back Buckle Clasp 30m Water Resistance Approximate Case Diameter: 40.5mm Approximate Case Thickness: 12.6mm Approximate Lug Width: 21mm Alternate Model Numbers: RA-AK0701S, RA-AK0701S10B, RA-AK0701S30B