“Does this have a power battery back-up? Do any of your phones?”

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• Yes they do but take a little advice stay away from purchasing this phone you will regret it

  Answered by Woody 4 years ago

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• This one doesn't. These models have: KX-TGM420, KX-TGM430, KX-TGM450, KX-TGM470, KX-TGM490. #C

  Answered by Panasonic Team 4 years ago

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