Thank you for viewing! Recently stopped working. Currently non-functional. First generation SEIKO Chronograph Speedmaster Prospex PROSPEX. This is a rare item that has already been discontinued. This is an auction for the wristwatch and the original band. Wrist size: Approximately 21cm Quartz movement with chronograph function Stopwatch function measures in 1/5 second increments, with a 30-minute counter. When the start button is pressed, the chronograph hand moves smoothly like a mechanical watch. Alarm included. Thank you!!