Features: stainless steel case stainless steel bracelet automatic movement caliber: powermatic 80.111 23 jewels scratch resistant sapphire crystal with antireflective coating green dial analog display power reserve up to 80 hours patented nivachron balance spring superluminova dial interchangeable quick release bracelet butterfly clasp with push buttons luminous hands and markers date display see through case back deployment clasp 100m water resistance approximate case diameter: 40mm approximate case thickness: 10.9mm approximate lug width: 12mm