This Bell & Ross watch has a fully automatic mechanical movement. (which means it will never require batteries!) The case is built of some very sturdy stainless steel (or titanium steel) It shows the 60-sec, the 30 min, the 12 hr (subdial counters) as well as hours, minutes and of course seconds. The watch displays the day and date at the 3 o-clock position. The dial is made with anti-UV treated substances to keep the watch in good shape. The glass is made of sapphire crystal in order to keep it looking scratch free and glare free as well. The watch can resist water depths down to 650 feet feet! (200 meters) Stainless steel, titanium steel, or rubber bracelet.