The Seiko SSB345P1 Chronograph is designed for both sport and style, featuring a bold 43.9 mm stainless steel case with hard coating and matching stainless steel bracelet. Powered by the quartz 8T63 movement, it offers a 60-minute chronograph with 1/5-second increments, 24-hour sub-dial, small seconds, and date display. A tachymeter bezel, LumiBrite hands and indexes, and water resistance up to 100 m ensure reliability in any setting, while the Hardlex crystal and screw case back provide lasting durability.