Features: Stainless Steel Case Stainless Steel Bracelet Automatic Movement Caliber: F6B2 22 Jewels Sun & Moon Phase Sapphire Crystal Blue Dial Analog Display Power Reserve Day And Date Display See Through Case Back Deployment Clasp 50m Water Resistance Approximate Case Diameter: 42mm Approximate Case Thickness: 13mm Approximate Lug Width: 22mm Alternate Model Numbers: RA-AK0308L, RA-AK0308L10B, RA-AK0308L30B