Longines Master Collection

The Longines Master Collection, reference L2.128.4.87.6, has a round 25.5 mm steel case. The white mother-of-pearl dial is set with diamonds and has polished silvered hands. Measuring 8.9 mm thick and 30.5 mm lug-to-lug, the case has a water-resistance rating of 30 metres. Self-winding calibre L592.5 is visible through a transparent case back. A scratch-resistant sapphire crystal covers the dial, which displays the date and central seconds. The steel bracelet closes with a triple safety folding clasp and a push-piece opening mechanism. The movement beats at 28,800 vibrations per hour and has a power reserve of up to 45 hours.