Safety: no electrical contact design can avoid the danger of electric shock.
Durable: Power transmission components are not exposed, so they will not be eroded by moisture, oxygen, etc. in the air; there is no contact, and therefore there will be no mechanical wear and tear in connection and separation, such as the loss caused by fire.
Convenience: no need to charge with wire connection, as long as placed near the charger can be, without occupying a number of power outlets, no more wire winding trouble.
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