heart rate measurement
You can measure your heart rate anytime (except in setting
1.Wear the watch on your wrist and place fingertips (suggest to use index finger and middle finger) on both metallic plates to enter Heart Rate Mode. A beep tone will be heard, “HR” banner is displayed and 
will flash to indicate the watch is detecting heart rate reading. It will take between
2.If a valid heart rate reading is detected, the screen below will be displayed. Remove your fingers.
3. To exit Heart Rate Mode, remove your fingers for 3 seconds or press any key.
TIPs:
For an accurate heart rate reading, make sure:
•you are not currently running, swimming or doing excercise
• to wear the watch on your wrist and that your fingertips touch the 2 metallic plates
If you cannot get your heart rate reading within 10 seconds or if any unusual condition occurs during heart rate reading:
• moisten your fingertips
•make sure your fingertips are warm and steady
•do not press too hard on the metallic plates
•make sure the metallic plates and the back of your watch are clean
•make sure the back face of your watch is in close contact with your skin
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