Just plug in your headphone or earphones via audio jack or bluetooth and then press the buttons labeled "Left" or "Right" to check which side of your headphone (earphones) is Left or Right. It will play a sound in your ear indicating which one is Left or Right.
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Basta collegare la cuffia o gli auricolari tramite jack audio o bluetooth e quindi premere i pulsanti "Left" o "Right" per controllare quale lato della cuffia (cuffie) è Left o Right. Riprodurrà un suono nell'orecchio indicando quale è Left o Right.
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