A vintage Seiko automatic chronograph wristwatch, ref. 6139-6012 in stainless steel, blue dial, lume hands and applied markers, 1/5th second and tachymeter outer track, orange flyback seconds, day date window, subsidiary 30 minutes register, 17 jewel cal. 6139B self wind movement, cushion shape case, size 39 mm, generic stainless steel band with folding clasp, recent full service.