Using the earbuds
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Because the heart rate sensor uses light to approximate heart rate, its accuracy may
vary due to physical factors that affect light absorption and reflection, such as blood
circulation/blood pressure, skin condition and location and concentration of blood
vessels.
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If obstructions between the heart rate sensor and your ear, such as body hair, dirt, or
other objects, prevent the light from reflecting evenly, measurements may be inaccurate.
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The accuracy of the heart rate sensor may be diminished when you are trying to measure
infants’ heart rates.
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If the heart rate sensor is dirty, clean it before use.
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If the heart rate sensor is damaged, measurements may be inaccurate.
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If your earbuds become hot to the touch, stop measuring and remove them from your
ears. Extended exposure of skin to hot earbuds can result in burns.
Using call features
When the earbuds are connected to a mobile device, you can answer and control calls from
the connected mobile device.
Answering or declining a call
When a call comes in while you are wearing the earbuds, they will emit a sound.
To answer the call, double-tap the touchpad.
To decline the call, tap and hold the touchpad.
You can hear the other party’s voice only via the main earbud.
Adjusting the volume
Drag your finger upwards or downwards on the touchpad to adjust the volume during a call.
