Longines, the founder of Longines, launched a series of watches with Observatory certification (COSC) on the 185th anniversary of the Longines brand. The men's model is 40mm, the women's model is 30mm, and the 316 stainless steel case and strap. The simple time scale echoes the simple and beautiful central large three-hand, making the time clear and intuitive. We use the EAT2892 blue nail movement (a good movement that exceeds the original), and the OEM channel accessories have all undergone high-quality waterproof tests and travel time tests! High-definition, transparent and dazzling imported sapphire crystal mirror, unworn, unremoved protective film support.