Caliber mechanism 4R36, 24 stones, power reserve when fully wound 40 hours Watches and manual plant Indication of date, day of week Impact-resistant, scratch-resistant sapphire crystal Transparent back cover with the screw clamp Steel bracelet, triple folding clasp buttons to open the Housing diameter 38.5 mm, thickness 11 mm Made In Japan Glass: Sapphire glass Watch: Japanese watches Mechanism type: Automatic mechanical watches Stainless steel Case Water resistance: WR 100