The Seiko VR31 quartz chronograph watch movement features three central hands for hours minutes and seconds with hand sizes 110/65/20 and 21 mm indicator hands. It includes three subdials consisting of a 24 hour display at 3 o’clock a 60 second counter at 6 o’clock and a 30 minute counter at 9 o’clock. This 13½ ligne movement measures 30.60 mm in diameter with a movement height of 3.97 mm and an overall height of 6.25 mm. It has zero jewels uses stem part number 351 177 and operates on a 371 battery.