6645-01-544-0408 Watch features black face with both 12 and 24-hour dials. Diver’s wristwatch with black dial which includes 3 sub-dials; luminous hands and hour markers; day/date calendar; 0 to 60 outer turning bezel; inner time ring with 1/100 minute and 1/5 second timing; water resistant to 300 meters/1,000 feet. Sapphire crystal; 25 jewel automatic movement; stainless steel case; 46MM diameter x 17MM thick. Bracelet is vulcanized rubber with stainless steel buckle. Light sources for dial and hands are provided by self-lighting tritium tubes (activity between 26 to 30 millicuries). The watch is Swiss made and carries a three-year warranty.