The wireless lapel mic work with Type-C Phone , Android OTG Phone. Plug and Play, NO APP or BLUETOOTH is needed. Small Compact Size Help Easily Clip to Your shirt, Tie or Pocket,Hands-Free. This wireless microphone for Android features an internal intelligent noise cancellation chip that effectively reduces noise and picks up sound brilliantly. Connectivity: 2.4G Charging port: Type-C Signal to noise ratio: 64 dBm Directivity: Omni-directional Battery capacity: 80 mAH Frequency response range: 20-20 KHz Maximum transmission distance: 65ft What's in the package? Receiver x 1 Transmitter x 1 USB-C charging cable x 1 User manual x 1