The multifort m chronometer is distinguished by its exceptional quality—well beyond the standards. 42mm stainless steel case vertical satin-brushed gradient gray dial with date window and super-luminova® anti-reflective sapphire crystal see-through case back caliber 80 with a power reserve of up to 80 hours; nivachron™ hairspring offers formidable precision interchangeable gray fabric strap with pin buckle clasp water-resistant to 100 meters