The Seiko SSB427P1 features a stainless steel case and bracelet with a 41.50 mm diameter, 12.10 mm thickness, and 22.00 mm lug width. It includes a tachymeter scale and chronograph function, powered by a quartz movement. The watch has a blue dial with an analog display protected by a Hardlex crystal. It offers luminous hands and markers, a screwed case back, deployment clasp, and 100m water resistance. Additional features include 12/24-hour display and date display.