Case: Case Size 12H-6H: 51mm Case Material: Stainless Steel Caseback Structure: Screw Caseback Crown: Screwed-Down Crown Glass Material: Sapphire Crystal Glass Coating: Anti-reflective coating glass One-Way Rotating Bezel: Yes Movement: Automatic Self-Winding: Yes Jewels: 22 Jewels Vibration: 21,600 vibrations/hour Hand Winding: Yes Movement: Mechanical Caliber Code: Cal.40N5A Made in Japan Feature: Power Reserve Indicator: Yes (40H) Second Hand Halt Mechanism: Yes Day: Yes Water Resistance: 200m