NB 902 User Manual page 6

5
Workout Mode - Precaution/Tips for Heart Rate Measurement
Heart Rate Features
• This Watch supports 5.3kHz chest strap (not included in this packaging), thus, with
chest strap, this Watch can provide a continuous supply of heart rate data like current
heart rate, average heart rate and maximum heart rate to user for guiding them to
achieve their fitness goal.
Precautions / Tips
• There is two contacts located on the back of the Chest Strap. These two contacts
must be firmly contacted with the user's skin during measurement.
• DO NOT take heart rate measurement when diving or under water.
• Clean the contacts occasionally by applying a few drops of water, and wipe it dry with
a paper towel to remove any residual grease.
• DO NOT use hand cream; it will insulate the signal between the skin and the contacts.
• Clean your skin with soap and water for better signal transmission.
• For those with extremely dry skin, apply some conductive gel or water may help.
• Adjust the Chest Strap with the supplied elastic band until it is hold on your chest
firmly to avoid loosen it when doing exercise.
• Avoid doing any awkward motion during measurment, otherwise error may be
resulted.
Soft Belt
Front View
Elastic band
contact
release slot
Battery Door
contact
Back View