Smartphone connector receiver Type-C Comes with 2 wireless microphones that can work simultaneously The transmitter is a built-in microphone, can be used as a clip-on or handheld interview. Transmits signals up to 20 meters (no obstacles) Has an automatic noise cancellation system Used for video recording, audio recording Built-in 80mAh battery with Type-C charging port (microphone and receiver) Continuous use for 6-8 hours. **Does not support smartphones with Type-C port and Aux3.5mm port in the same device**