Case Size 3H-9H: 40.5mm Case Size 12H-6H: 46.5mm Case Material: Stainless Steel Caseback Design: See-through Caseback Caseback Structure: Snap Glass Material: Crystal Glass Glass Material: Caseback: Crystal Glass Movement: Automatic Self-Winding: Yes Jewels: 22 Jewels Vibration: 21,600 vibrations/hour Hand Winding: Yes Movement: Mechanical Caliber Code: Cal.F6724 Made in Japan Feature: Second Hand Halt Mechanism: Yes Date: Yes Water Resistance: