Case: Case Size 3H-9H: 40.8mm Case Size 12H-6H: 46mm Case Material: Stainless Steel Caseback Design: See-through Case back Glass Material: Crystal Glass Glass Material: Caseback: Crystal Glass Movement: Automatic Self-Winding: Yes Jewels: 22 Jewels Vibration: 21,600 vibrations/1 hour Hand Winding: Yes Movement: Mechanical Caliber Code: Cal.F6S22 Made in Japan Feature: Second Hand Halt Mechanism: Yes Water Resistance: 50m