Longines Master Collection

The Longines Master Collection, reference L2.450.4.87.2, has a 34 mm round case in steel. The watch is set with diamonds. Self-winding calibre L888.5 has up to 72 hours of power reserve and is visible through a transparent case back. The dial is covered by a scratch-resistant sapphire crystal, with several layers of anti-reflective coating on both sides. Blued steel hands indicate the hours and minutes on the white mother-of-pearl dial. A blue alligator leather strap fastens with a triple safety folding clasp and a push-piece opening mechanism with a fine adjustment system. Measuring 9.3 mm thick and 41.5 mm lug-to-lug, the case has a water-resistance rating of 30 metres.