Perpetual calendar automatically adjusts for add and even months including leap years up to February 28,2100. Calendar indicates date and can also indicate month. Second hand can indicate number of years since last leap year. Highly accurate with yearly loss/gain rate of less than 20 seconds. Battery life approximately 4 years. Water resistant up to 100M. Hardlex crystal. Perpetual calendar quartz movement. Gold tone Stainless steel case and bracelet. Push button release clasp. White dial with luminous gold tone hands and markers. Screwdown caseback. Date display.