BOYA BY-WM4 Pro RXD Mini Wireless Receiver for Apple Lightning iOS Devices for WM4 Pro System

Features:
Ideal for Youtube, vlogging, facebook, podcast, mobile journalism and more
Digital 2.4GHz wireless receiver
Ultracompact and miniature-size
Compatible with most of Android devices and other Type-C devices
Selectable stereo and mono mode
Monitoring sound by 3.5mm headphone output
Master volume control
Up to 60m (197ft) operation range (without obstacles) 

1x BY-WM4 RXD Wireless Receiver