Talk to your iPhone or iPad to operate the stopwatch. ① Say "Start" to start measurement. ② If you say "stop", the measurement will stop. ③ When you say "Reset", the display returns to 0. ④ You can measure the split time as many times as you like by saying "lap". * Please note that there may be an error due to a time lag due to voice recognition. If you want to measure the accurate time, please use the button operation.