Here are some tips to help you get a heart rate reading:
•    Make sure the back of the MIO watch has good firm contact against your skin by fastening it securely.  If you have a slender wrist, move the watch up away from your wrist bone.   
•    Press the sensors with your finger pads.  Too much pressure will create too much muscle noise, which makes it hard for the watch to read your ECG signal.  Please note that only the bottom sensor on the watch face will depress.  The top sensor does not depress, so simply rest your finger against the top sensor while gently depressing the bottom sensor.  
•    If you are pressing the sensors correctly the screen will change and display a flashing heart icon and will read “BPM”.  Press gently and hold until you see this screen.  Keep holding the sensors for a few seconds until you get a heart rate reading.
•    If the heart icon continues to flash without displaying a heart rate reading, this could be an indicator of a weak battery. Please see question 5.
•    If you are holding an item in your hand or hanging a heavy item such as gym bag from your arms, this may interfere with MIO’s ability to read your heart rate.
•    Keep your arm low, relaxed and close to your body.  If you raise your arm above your heart this will slow down the heart rate function as your signal will be traveling against gravity. If you are moving while taking your heart rate, try to keep you fingers as steady on the sensors as possible.
•    Try moistening your fingers and the back plate of the watch.  It is okay to allow perspiration to build up against the watch; in fact this will likely allow MIO to read your heart rate more quickly.  If your skin is dry this will affect the speed of the heart rate readings.