THE WORST
Rarely if ever do I have such negative feelings about a product as I do with this heart monitor. First - it is near to impossible to find the side buttons in order to change the function. There is no marking on the side (two functions on each side.) One has to depress the hidden button, just at the right place with the correct pressure in order for the function to be initiated. Second, in order for the monitor to register my heart rate it has to be put on extremely snug and this pressure hurts my wrist . Third, I seriously am frustrated by the fact that I have to keep my arm quite high in order for the registry be made. Four, contact is made and the registry begins noting my heart rate. For some reason it looses contact and my rate will either jump up or down. Five, I have trouble for the watch to keep a charge for more than an hour or so.
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