Features: Made In Japan Stainless Steel Case Leather Strap Automatic Movement Caliber: F6L24 22 Jewels Sun Moon Phase Sapphire Crystal White Dial Analog Display See Through Case Back Butterfly Clasp 50m Water Resistance Approximate Case Diameter: 42mm Approximate Case Thickness: 14mm Approximate Lug Width: 21mm Alternate Model Numbers: RA-AS0011S, RA-AS0011S10B, RA-AS0011S30B