POLAR M21 - Manual (Page 7)

8
B U T T O N S A N D T H E I R F U N C T I O N S
START/STOP/OK
• Start heart rate measurement
• Start the stopwatch
• Stop the stopwatch
• Activate the displayed mode
• Lock your selection
SCROLL UP
• Move forward to the next mode
• Select the desired value (up)
SCROLL DOWN
• Move backward to the previous mode
• Select the desired value (down)
• Backlight on
• Signal sound on or off
RESET
SCROLL DOWN
RESET
START/STOP/OK
SCROLL UP
M52 man USA GBR A 2001 10/12/01, 12:46 8