BOYA BY-WM4 PRO-K5 Digital Wireless Omni Lavalier Microphone System for USB-C Devices (2.4 GHz)

The lightweight, ultracompact receiver plugs directly into the USB Type-C port of your Android phone or mobile device. 

The receiver's input gain can be adjusted to accommodate speakers at different volume levels.

The receiver features a 3.5mm headphone jack for monitoring.

For a two-person shoot, simply add another transmitter instead of buying a whole system. Since the BY-WM4 PRO RXU is a dual-channel receiver, it can simultaneously handle two TX4 Pro wireless transmitters (second transmitter available separately).

Up to 8 systems can operate simultaneously in the same location, but each system should be separated by at least 16.5' to avoid interference.