6850 SC Franck Muller. This Watch has 18K rose gold case & fixed bezel. Silver dial & black-tone hands, arabic hour markers. Sapphire crystal protects front side of the watch, case back is solid. Alligator leather strap with rose Gold buckle. Automatic movement, power reserve 47 hours. Water-resistance up to 30m./90 ft. All pre-owned watches are not returnable. One year warranty for all watches. 6850 SC Franck Muller 18K Rose Gold Watch.