. Wireless Headset with Microphone System: only for Mic jack, no Aux Jack, otherwise noiseless, built-in high-sensitivity condensing microphone, transmission distance upgrade to 160ft (50m) signal stability, no delay, no radiation, anti-howling, anti-jamming, fixed frequency, clearer sound quality. Wireless Microphones Charging and Working: the transmitter and receiver are built-in 450Mah rechargeable Li-ion batteries, which can offer about 8 hours working time. The Usb cable has two Micro Usb V2.0 to charge the transmitter and receiver at the same time, it is only 2.5 hours to fully charge. Easy to use: turn on the transmitter and receiver power switches, the blue light will flash for about 2 seconds, the indicator light will stop flashing after a successful match, and then you can use it, there is no further action. The headset and handheld has a 2-in-1 design, easily changes the handheld mode to the headset mode to meet your needs. Unsupported smartphones, Laptop, Bluetooth speaker.Ideal app: the receiver plug is 3.5mm. For 6.35mm amps, use an additional 6.35mm adapter (included) to connect more devices. Use multiple wireless microphones at the same time: built-in cardioid condensing microphone, widely used for conference, speech, online podcasting, outdoor live, jog instructor