This is an excellent Seiko Sportura Kinetic Diving SKZ325K1 Watch.  The measurements of the watch case are 47.5mm width and 14mm depth.   The many features of this Seiko watch include a Seiko Kinetic movement that does not require a battery, 200m water resistance that is certified for diving, black dial with luminous markers, sweeping second hand, screw down clear back which allows viewing of the movement, day/date display and scratch resistant mineral glass.  The watch case and bracelet are comprised of stainless steel. Seiko watches offer the very best in technological innovation coupled with unrivalled build quality and versatility.  The Seiko Sportura Diving Collection watches are the ultimate diving companion