JOYO Wireless Audio Interface Transmitter and Receiver for Live Streaming Amplifier 3.5mm Stereo Recording and Playing with Phone Tablet & PC Background Music, with Type USB C & Lightning (JW-05R)2. 4G band wireless audio interface for live streaming, 2 way signal communication, supports both live streaming and wirelesss playing function Transmiter: 3. 5mm interface for amps or mixers, low noise and low latency, built in battery, up to 5hrs battery life Receiver: Type C & Lightning interface for smartphone, plug & play. Built in OTG audio interface function, it can supply power for smartphone by cables while charging Wireless audio system for