The S358 microphone amplifier has a microphone interface, indicator light, audio interface, power volume switch, strap buckle, back clip, and USB-C charging port. This microphone amplifier can be connected to Bluetooth or plugged in a TF card/U disk to play. It supports recording when plugged into a U disk. 4 weeks on a single charge. The loudspeaker is a 90dB high-sensitivity loudspeaker.
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