The BOYA BY-WM3D 2.4GHz wireless microphone system features one transmitter and one receiver, both of them are compact and lightweight.

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  Ultra-compact Wireless Microphone System
  Small size & light weight, the transmitter is only 10.5g (0.37oz). And the BY-WM3D is equipped with a charging case that can charge and pair the transmitter and receiver. After one full charge, the TX/RX can continue working for about 4.5/8 hours.
   
  Three Interchangeable Connectors Make It Universal
  And just like the BY-WM3U, the receiver of BY-WM3D also features three interchangeable connectors, two of which are the same as the ones of BY-WM3U, namely TRS and TRRS connector. But its last connector is Apple MFI certified Lightning connector. These three plugs make it compatible with all recording devices with Lightning or 3.5mm input socket.
   
  In-built Microphone to Avoid Hassle
  With an in-built omnidirectional microphone on the transmitter, it is easy to use. After pairing, just connect the receiver with your recording device, pin the transmitter on your collar to get started.