This is information found through a Google Image search. This is an automatic wristwatch called the Seiko Sportsmatic 5 Deluxe. It's a vintage model manufactured in the 1960s and was positioned as the highest-grade model in the Seiko 5 series. The "5" represents the five main features: Diashock (shock resistance), water resistance (at the time), date display, day display, and automatic winding. The movements used include Cal. 7619A (25 jewels) or Cal. 7606A (23 jewels), and features include a hacking function (seconds hand stop) and a quick date change function via a push button at the 2 or 3 o'clock position. The back cover often has a "dolphin" mark indicating water resistance, and it is characterized by its sporty appearance. I think it's broken, but if you can fix it, please do. It's a junk item, please.