Longines Master Collection

The Longines Master Collection, reference L2.257.4.87.6, has a 29 mm round case in steel. The watch is set with diamonds. Measuring 9 mm thick and 34.5 mm lug-to-lug, the case has a water-resistance rating of 30 metres. Self-winding calibre L592.5 has up to 45 hours of power reserve and is visible through a transparent case back. The dial is covered by a scratch-resistant sapphire crystal. Polished silvered hands indicate the hours and minutes on the white mother-of-pearl dial. A steel bracelet fastens with a triple safety folding clasp and a push-piece opening mechanism. The dial has a date display and central seconds.