Kinetik EFT1, Руководство пользователя

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Using Your Energy Fitness Tracker
Note the following when placing the EFT1 onto your arm:-
* Ideally, the EFT1 should be worn on the left arm just above the elbow.
* The EFT1 uses reflected light to measure your heart beat. Body hair will obstruct this light
so always place the EFT1 onto the arm where there is little or no body hair.
* The EFT1 should be worn snugly so that the light sensor on the underside of the unit
is in contact with the skin but not too tight as to be uncomfortable.