Hi, I am looking at purchasing an official DJI Mic for my Osmo Action 4, and looking at website it says its compatible with Osmo Action 3 and other cameras etc, but no mention of Osmo Action 4. Can someone confirm that I can infact use this mic for the action 4? Before I buy it. Thankyou, Ryan.  

Hello there, Ryan. Thank you for reaching out. Yes, the DJI Osmo Action 4 does support the DJI Mic. You only need to connect the receiver of the DJI Mic to the Osmo Action 4 USB-C port using a Type-C phone adapter then link the receiver and transmitter of the DJI Mic. Hope this helps. Have a nice day ahead!

DJI Paladin Posted at 1-3 21:23
Hello there, Ryan. Thank you for reaching out. Yes, the DJI Osmo Action 4 does support the DJI Mic. You only need to connect the receiver of the DJI Mic to the Osmo Action 4 USB-C port using a Type-C phone adapter then link the receiver and transmitter of the DJI Mic. Hope this helps. Have a nice day ahead!

I wish your answer would be a bit more specific.  I just received the 2 mic mini combo.  The Mic Mini is marked as compatible via the wireless link integrated in the camera.  It does not state that one one mic is compatible.  Very Disappointing.  I guess I have to return the combo pack now if the camera can only handle one mic mini. No reason to own two.  Can you please answer in full detail? Is there a firmware update planned for the Action 4 to handle two Mic Mini? Will the website be updated to state clearly that only one Mic Mini can be connected to the Action 4.  I have not found a clear compatibility list so far. I think about informing my viewers on my YouTube Channel LRTime about the inaccurate marketing by DJI.

LR Time Posted at 11-29 02:36
I wish your answer would be a bit more specific.  I just received the 2 mic mini combo.  The Mic Mini is marked as compatible via the wireless link integrated in the camera.  It does not state that one one mic is compatible.  Very Disappointing.  I guess I have to return the combo pack now if the camera can only handle one mic mini. No reason to own two.  Can you please answer in full detail? Is there a firmware update planned for the Action 4 to handle two Mic Mini? Will the website be updated to state clearly that only one Mic Mini can be connected to the Action 4.  I have not found a clear compatibility list so far. I think about informing my viewers on my YouTube Channel LRTime about the inaccurate marketing by DJI.

Hi there. Thanks for reaching out. Osmo Action 4 can connect two transmitters but only supports audio recording by one transmitter. We will take note of your feedback and submit it to the relevant team. Thank you for your valued support!

DJI Paladin Posted at 12-26 23:44
Hi there. Thanks for reaching out. Osmo Action 4 can connect two transmitters but only supports audio recording by one transmitter. We will take note of your feedback and submit it to the relevant team. Thank you for your valued support!

1 DJI Osmo Action 4  can hook up via the USB C, or Wireless Mic,
A DJI mic first gen will require a Receiver + tx's with a USb C to TRS  cable, or DJI adapter.

2 the DJI Osmo Action 4 wireless mic  only allows the DJI mic 2 standalone, or DJI mic Mini, to be hooked up, one at a time,

Any wireless kit can be used with a DJI mic adaptor, TRS to TRS cable, or Usb C to TRS adapter, for the DJI osmo Action 4 camera, has not  received any updates   as the information was passed to the engineers to add the option of Two wireless hook ups, and older mics,   many times over, no replies were given back, and more or less  members are to check the DJI.com official site for future updates.

This is not the answer you  will get from a DJI staff, us the members thank you

regard FISH