Timex M515 M640 Heart Rate Monitor EP9TMXM640 3348A-TMXM640 User Manual

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Display icons
Viewing buttons
Watch buttons can help you navigate through viewing options.
When you see the ▲ and ▼ triangles on the edge of the display,
you know there is information to view. 
MODE
Press to go to
the next mode
INDIGLO®
night-light
Press to light 
the watch
Press to display
next data value
Press to display
previous data value
Watch display icons
Interval or basic
timer running
Chronograph
running
Night Mode enabled
GPS-3D Sensor
battery low
Sensor(s) activated
(blinks when trouble)
Alarm armed
Hourly chime
enabled