1 Paio Mini Auricolari In-Ear Potenziatore Suono Amplificatore Vocale Udito Invisibile Digitale

● Digital noise reduction. ● TWS, Mini,Magnetic charging. Input Noise:<=28dB. Max sound out put:118+/- 3dB. Sound gain:>= 35dB+/- 5dB. USB Charging cable x1. Frequency range:300-4500MHz. Main unit, Charing 2~3 hours for 20 hours use.

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