Longines PrimaLuna

The Longines PrimaLuna, reference L8.111.4.71.6, has a 26.5 mm round case in steel. The opaline ivory dial carries painted Roman numerals alongside blued steel hands. The case is 8.8 mm thick and 32.8 mm lug-to-lug, with water resistance rated to 30 metres. Self-winding calibre L592.5 provides up to 45 hours of power reserve and beats at 28,800 vibrations per hour. A scratch-resistant sapphire crystal covers the hour and minute display, with several layers of anti-reflective coating on the underside. A steel bracelet fastens with a triple safety folding clasp and a push-piece opening mechanism. A date display and central seconds appear on the dial.