2.4Ghz digital wireless headphones headsets earphones High-performace lithium-ion polymer battery Adjustable length of headbad 2.4Ghz digital wireless headphones headsets earphones Basic key-presses functions, Power switch button, the code key, Volume+, Volume-Frequency response 20Hz~20kHz;SNR: 90dBDistortion: ≤1%Operating voltage: 3.3-4.2VElectric current 65mAMaximum output power 4mWSpeaker size ...
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