The Seiko SPB321J1 is a robust automatic watch for men in the Prospex collection. It features a 42mm stainless steel case and a black dial with luminescent hands and markers. The 6R35 automatic movement provides a 70-hour power reserve. Water-resistant up to 200 meters, it is suitable for diving and everyday wear. The watch comes with a stainless steel bracelet and a deployment clasp.