218. heart rate measurement• Fasten the monitor to your wrist.• Place one finger on the sensor and hold it down for at least 5 seconds. Make sure that the sensor at theback of the casing fits closely to the skin. At first, the display reads „---“.• After 5 to 8 seconds, the heart rate reading is displayed.• If the heart rate alarm is switched on, the relative heart rate is also displayed.• If the measured heart rate is below the lower heart rate limit, this is indicated by an „L“. Any value abovethe upper heart rate limit is indicated by an „H“.• If, in pulse alarm mode, pulse limits according to age and gender have also not changed, the measured heart rate inthe fitness performance range (between 65 % and 85 % of the maximum heart rate) is displayed graphically.• 5 seconds after releasing the button, the heart rate monitor returns to the previous mode.Advice and tips1. Heart rate measurement is possible in any function mode.2. One sensor is fitted on the back of the monitor casing. The sensor has to have constant, firm contact with the skin.3. Never measure heart rate under water.4. Clean the back of the monitor occasionally using a damp cloth.5. Never use any skin cream when using the heart rate monitoring feature.6. Clean your skin and fingers with soap in order to ensure better signal transmission.7. With very dry or thick skin, there may be transmission problems.8. Moisten the tips of your fingers or use a conductive paste.9. When measuring, avoid any twisting or bending your wrist.9. Alarm function for heart rateYou can input a training zone with upper and lower training heart rates. When monitoring heart rate, two beeps indi-cate that you are outside the set training zone and that you can increase or reduce your training accordingly. This willhelp you to attain defined training objectives more efficiently.