Speedmaster '38 Mother of Pearl

From the retailer listing

Precision timing meets daily wearability in the Omega Speedmaster, a chronograph that never compromises on either. The 38 mm stainless steel case frames a mother of pearl dial with considered proportions, at its heart, the Omega 3330 calibre delivers 52 h of reserve. Water-resistant to 100 m, ready for whatever the day brings. Precision timing through the chronograph complication. Worn on a supple white leather strap. (Reference 324.38.38.50.55.001 / 32438385055001).