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3.SET BUTTON
Changes a value in the setting mode or turns on or off the alarm clock in alarm clock mode, reset stop watch
4.ST/SP BUTTON
Starts or stops the stopwatch
5. TIME / 
BUTTON
Displays the heart rate or holds to activate the heart rate alert
THE TRANSMITTER
The transmitter is used to count your heartbeat and transmit the data to the receiver. To put it on,
1.Wet the conductive pads on the underside of the transmitter with water or a conductive gel to ensure a solid contact.
2.Strap the transmitter across the chest. Adjust the strap until the transmitter sits snugly below the pectoral muscles for an accurate heart rate signal.
HINTS:
-The position of the transmitter affects its performance. Move the transmitter along the strap for the best transmission. Avoid areas with dense chest hair.
-In dry, cold climates, it takes the transmitter a while to function steadily. This is normal as the conductive pads need a film of sweat to improve contact with the skin.
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