Case: Case Size 3H-9H: 43.4mm Case Size 12H-6H: 51mm Case Material: Stainless Steel Caseback Structure: Screw Case back Crown: Screw down crown Glass Material: Sapphire Crystal Glass One-Way Rotating Bezel: Yes Movement: Automatic Self-Winding: Yes Jewels: 22 Jewels Vibration: 21,600 vibrations/1 hour Hand Winding: Yes Movement: Mechanical Caliber Code: Cal.F6722 Made in Japan Feature: Second Hand Halt Mechanism: Yes Date: Yes Water Resistance: 200m