Compatible with Type-C Android Phones Only: The wireless lavalier microphone works with Type-C port Android phones and most devices with USB-C ports (not compatible with iPhone/iPad with lightning port). Note: Some Android phones need to enable OTG. 2 Wireless Microphones and 1 Receiver: The wireless lapel microphone kit includes 2 microphones and 1 receiver, which can record two sound sources at the same time, or use a single microphone. The lavalier microphone can synchronize the background music and voice of the mobile phone in real time, reduce video post-editing, and provide professional full-band audio. Plug and Play & Noise Cancellation: Professional plug and play wireless lavalier microphone, no app or bluetooth required, just connect the transmitter to the device and they will connect automatically. The intelligent DSP chip provides 20kHz full-band stereo sound, accurate full 360 sound pickup, strong anti-interference ability, effective noise filtering, and helps you capture clear sound. 65FT Stable Audio Range Transmission: The transmission delay of the wireless microphone is only 0.009 seconds, which can achieve stable and interference-free wireless transmission up to 65FT (obstacle-free), helping you record or record videos clearly over a longer distance. You can place the microphone anywhere on the tie, giving you more freedom to record your voice.