Timex M640 User Manual
Page 82
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1. Press MODE until CHRONO appears.
2. Press and hold STOP/SET/RESET to clear any Chrono data.
3. Press STOP/SET/RESET to choose between Lap or Split time format
display. You cannot select a display format if the chronograph is
running or is not reset.
4. Press START/SPLIT to begin timing. The stopwatch icon (w)) will appear
on the display.
5. Press START/SPLIT again to take a lap or split. The Watch will display
the lap or split number, time average heart rate (for the lap or split) if
the data from Digital Heart Rate Sensor is being received.
6. Press MODE to immediately display new lap or split information OR
wait for a few seconds and the Watch will automatically begin to
display data for a new lap or split.
7. Press STOP/SET/RESET to stop timing when you want to take a break
or you reach the end of your activity.
NOTE: The recovery heart rate timer will begin automatically (for 1 or
2 minutes, as user set) after pressing STOP/SET/RESET if the Watch is
receiving data from the Digital Heart Rate Sensor. For more information
about recovery heart rate, see pages 21 and 22.
8. Press START/SPLIT to continue timing OR press and hold
STOP/SET/RESET to clear the chronograph display and set it back to
zero.
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Chrono Mode operates as the main workout data center for your Watch. It
can record elapsed time for up to 100 hours. It can also recall information
for up to 30 laps.
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❖ Chronograph: The chronograph records timed segments for the
duration of your activity.
❖ Lap: Lap time records individual segments of your activity.
❖ Split: Split time records the total elapsed time since the beginning of
your current activity.
❖ Taking a lap or split: When you take a lap or split, the chrono-graph
records one time and automatically begins timing a new one.
14
START/SPLIT
Press to begin timing,
take a lap or split, or
continue timing after a
pause.
STOP/SET/RESET
Press to clear chrono
data, choose between lap
or split display format, or
pause or stop the chrono.
HEART RATE
Press to switch display
views.
MODE
Press to move to the next
mode, or immediately
display a new lap or split.
INDIGLO
®
night-light
Press to light the Watch.