Product Features 1. The magnetic wireless microphone requires no APP or Bluetooth, no complicated setup required, plug and play, compatible with devices with iPhone/iPad/Android port (Note: calls and online chats are not supported). 2. Active noise reduction and integral signal-to-noise ratio can filter out noise in different environments, allowing you to capture clear sounds and get a sense of immersion. 3. Support one-to-two use, support Type-C interface and Lightning interface. If your device has a Lightning interface, first connect the Lightning interface to the device, and then connect the receiver to the bottom of the Lightning interface to connect the iPhone 4. There is a protective film on the surface of the microphone transmitter to prevent scratches. You can tear it off if you mind. Product Specifications Colour: black. Model No.: SX21 Microphone battery capacity: 100 mAh Charging compartment battery capacity: 800 mAh Battery life: 6 hours Signal-to-noise ratio: 64 dB Sensitivity: -42dB Frequency response range: 20Hz-20kHz Transmission range: 20 meters without barriers