“What does the yellow beeping light above the charging green light mean”

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• Hi there! That is the brush head replacement reminder light. The Philips Sonicare ProtectiveClean 6100 Sonic electric toothbrush HX6877/21 is equipped with BrushSync technology that tracks the wear of your brush head. If the light turns amber, it's a reminder to change your brush head.

  Answered by Philips 11 months ago

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• Hi there! That is the brush head replacement reminder light. The Philips Sonicare ProtectiveClean 6100 Sonic electric toothbrush HX6877/21 is equipped with BrushSync technology that tracks the wear of your brush head. If the light turns amber, it's a reminder to change your brush head.

  Answered by Answered by Philips 11 months ago

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