Fully working and in original packaging. 2.4G wireless transmission technology, 50m stable wireless connection at open area, loud, clear and high fidelity sound, no interference and echo. Wireless microphone is Composed of two main parts (transmitter and receiver). The wireless microphone will be automatically connected when the receiver is plugged into the device (3.5mm and 6.35mm plugs included) Can be widely used on voice amplifiers, large power speakers, trolley speakers, etc. Built-in rechargeable Li-ion battery, one time full charging about 3-4 hours, more than 8 hours working time.
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