Sportline Solo 910 User Manual page 4

3. A 'beep' will sound and your heart rate will be displayed.
It's that easy!
Because the Sportline Solo 910 Heart Rate Watch is a sensitive
monitoring device that reads your EKG signals, reading times will vary.
If you don't get a reading in 3-8 seconds, wait a couple of minutes and
try again. This gives the Sportline Solo 910 Heart Rate Watch a chance
to settle in and pick up your electrical signals.
Your heart rate will remain displayed once measured,
and will remain displayed for 7 seconds after you release
the sensor button.
• The Sportline Solo 910 Heart Rate Watch must be attached
to your wrist in order for the Heart Rate Measure function
to work.
• Proper finger pad contact is very important and affects the heart rate
reading time.
• For those users with dry skin, thick or calloused fingers, low heart rate
signal strength (EKG strength), minimal padding on your fingers, or
users located in dry environments, please see our Helpful Hints section.
• The Heart Rate Measure function is not intended for use or operation in
or under water.
How to Calculate Your Maximum Heart Rate
• Deduct your age from 220 (220 - your age = your maximum
heart rate)