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tabulation：“PowerBeat X ”

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My device cannot be turned on - What could be the cause, and what steps should I take?
My device suddenly shut down - What could be the cause, and what steps should I take?
My device is beeping every five seconds - What could be the cause, and what steps should I take?
Why is the defibrillation charging time taking so long?
My device cancels the charging state automatically during charging - What could be the cause, and what steps should I take?

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