Polar Electro b3 User Manual page 18

1. Attach the transmitter to the elastic strap.
2. Adjust the strap length to fit snugly and
comfortably. Secure the strap around your
chest, just below the chest muscles, and
buckle it.
ENGLISH
3. Lift the transmitter off your chest and
moisten the two grooved electrode areas
on the back.
4. Check that the wet electrode areas are firmly
against your skin and the Polar logo is
in a central, upright position.
17