Seiko 9R15 Manual - Page 13

How to use the stopwatch function ① Make sure that the mainspring is sufficiently wound and the watch is working. ② If your watch has screw-lock type buttons, unlock them. ⇒ "How to use the screw-lock type button" page 21. ③ Start measuring time. Upon pressing of the START/ STOP button, the chrono-graph hands start moving and the stopwatch starts measuring time. ④ Stop measuring time. At the moment you want to finish the measurement, press the START/STOP button again to stop the chronograph hands. Example: 6 hours 20 minutes 10 seconds and 8 ※ The chronograph minute hand on the 30-minute dial completes two full rotations in an hour. To read the 30-minute dial, see the display of the 12-hour dial as a rough indication. ⑤ Reset the chronograph hands. After stopping the chronograph hands, press the RESET button to return all the chronograph hands to the 0 position. 22 Chronograph (For Cal. 9R86, 9R84) Accumulated elapsed time measurement ① Make sure that the mainspring is sufficiently wound and the watch is working. ② If your watch has screw-lock type buttons, unlock them. ⇒ "How to use the screw-lock type button" page 21. ③ Start measuring time. Upon pressing of the START/ STOP button, the chronograph hands start moving and the stopwatch starts measuring time. ④ Stop measuring time. At the moment you want to stop the first measurement, press the START/STOP button again to stop the chronograph hands. The measured time will be displayed. ⑤ Restart measuring time. Upon pressing of the START/STOP button again, the chronograph hands restart moving from the position they had previously stopped. ⑥ Stop measuring time. At the moment you want to stop the second measurement, press the START/STOP button again to stop the chronograph hands. The measured time displayed at this time will be the total of the first and the second measurements (accumulated elapsed time). ⑦ Repeat measuring time cumulatively. Step 5 and 6 above can be repeated as required. As you repeat pressing of the START/ STOP button, the measurement will stop and restart and each elapsed time measurement will be accumulated. ⑧ Reset the chronograph hands. After stopping the chronograph hands, press the RESET button to return all the chronograph hands to the 0 position. Chronograph (For Cal. 9R86, 9R84) 23 English