Boyi 20 wireless headphone built-in microphone.TF card support.FM radio support.3.5 mm AUX cable support. Equalizer function that can change different sound effect with crystal clear treble, cyrstal clear sound, extra super bass and output clear Sound. BOYI Wireless Headphones KARLER BASS . Handling Capacity: 50mW. Impedance: 32 ohm. Sensitivity: 108 dB/mV. Frequency: 20Hz – 20 KHz
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