The PRO-XD is Azden's first 2.4GHz digital wireless lavalier microphone system available at just under $200 USD. The lightweight compact kit uses rechargeable batteries that can be charged over USB with a run time of up to 11 hours.
The Pro-XD kit is designed to work directly with cameras and comes with additional cables to be used with Smart Devices that require a TRRS connection (phones, tablets, computers). A great affordable tool for those looking to capture better audio on popular services such as Meerkat or Periscope when live streaming video from smartphones.
The transmitter accepts either line-in or mic input, and has the option of transmitting both simultaneously. A single transmitter can also be synced to multiple receivers, which is a great option for sending audio to multiple cameras for multi-angle shoots. The receiver also offers a headphone output for monitoring audio which is helpful when using some cameras that don't offer a headphone out (such as Canon 6D, Panasonic G7, etc.)
The audio is will not be as high quality as systems that costs several hundred dollars more, but for just $199 the Pro-XD Wireless Lav Mic system sounds better than trying to work with the in-camera microphone, and is far more convenient than trying to sync audio in post.
With the growing number of people working with smaller point-shoot systems or smartphones for video, I see this a great wireless kit option to consider. The ability to sync to multiple receivers means you can even shoot Multi-Cam angle interviews when covering events with clear audio using just iPhones.
The Pro-XD is available now and you can see more specs over at the product page at B&H (found here).
Azden Pro-XD 2.4 GHz Wireless Lavalier Microphone System