When there is only 20% left of the battery charge, the message 20% appears and the tracker vibrates to alert you. When this message appears, there is remaining battery life of about 1 day.
iHealth (AM3) - Low battery signal
When there is only 20% left of the battery charge, the message 20% appears and the tracker vibrates to alert you. When this message appears, there is remaining battery life of about 1 day.
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