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Supply Type
Manufacturer, Exporter, Supplier
Preferred Buyer From :
All over the world
Easy to use Headset Amplifier
> Headsethandset switch
> Transmission volume control
> Receiving volume control
> Mute switch
> Battery low indicator
> Mute “On” indicator
> Powered by either batteries or DC Adaptor
> Polarity switching to ensure compatibility with most phone systems