seiko ssb031 men's chronograph stainless steel case watch seiko black dial enhanced by luminous silver-tone hands. silver-tone stainless steel case with a silver-tone stainless steel band. quartz movement. 100 meters / 330 feet water resistance. fixed bezel. scratch resistant hardlex crystal. solid caseback. fold over clasp. case size 40 mm x 11 mm. band 20 mm x long. seiko ssb031 chronograph watch.