Longines PrimaLuna

The Longines PrimaLuna, reference L8.113.4.87.6, has a 30 mm round case in steel. The watch is set with diamonds. Self-winding calibre L592.5 has up to 45 hours of power reserve and beats at 28,800 vibrations per hour. The dial is covered by a scratch-resistant sapphire crystal, with several layers of anti-reflective coating on the underside. Blued steel 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. Measuring 9.1 mm thick and 37 mm lug-to-lug, the case has a water-resistance rating of 30 metres.