Legibility is a key feature of the Longines Spirit watch. The scratch-resistant sapphire crystal, with anti-reflective coatings on both sides, ensures that the black dial with 'sunray' effect is clearly displayed in all lighting conditions. The applied Arabic numerals and bronze-colored PVD hands, treated with Swiss Super-LumiNova®, guarantee precise readability even in the dark. On the other hand, inside the Longines watch is the self-winding Caliber L791 movement, a testament to Longines' dedication to mechanical excellence. With 28,800 alternations per hour and an impressive power reserve of up to 68 hours, driven by a monocrystalline silicon hairspring, this movement guarantees exceptional performance and lasting precision. In addition, the Flyback chronograph function, with central seconds hand and 30-minute counter at 3 o'clock, adds an extra dimension of functionality to this exceptional men's accessory.