Breitling Superocean Heritage B01 Chronograph 42mm UB0156H11B1A1 Automatic mechanical watchesProduct Highlights Frequency of oscillations per hour: 28,800 vibrations per hour Movement mechanical self winding movement Power Reserve approx. 70 hours Frequency of oscillations per hour 28,800 vibrations per hour Number of jewels bearings 41 jewels Calendar dial aperture Case Material stainless steel and 18 carat red gold Back screwed (sapphire crystal) Bezel ratcheted unidirectional bezel Crown Screw down, double gasket Crystal Curved sapphire