Solid product without annoying power supply whistling

Solid product without annoying power supply whistling

Poweradd 50 Watt Universal 6 USB Port Adapter Mulitport Power Supplies USB Travel Charger Adapter for iPhone, iPad AIR, smartphones, tablet PCs and other 5V USB devices (electronics)
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Customer Review

The device does what it is intended, namely to charge tablets, smartphones and other devices reliably.
This does especially without high-frequency whistling, like to give the other cheap chargers himself.

That's all there really is not to say.

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