Here are my thoughts on the mic system:Pros:Came with batteries pre-installed, which made me very happy. Takes two AA batteries for each the receiver and the transmitter.Super easy setup. Basically just turn on the receiver and transmitter, plug the receiver into the mic jack of the camera, and talk into the mic that is attached to the transmitter. Takes about 3 seconds to be up and running.Has coldshoe mount, so I can attach it securely to my camera.Does what a lav mic should. Allows clean audio from a good distance from the camera. (Sadly, I haven't been able to really test the range since all of my testing has been indoors).Cons:I keep tweaking the settings on my camera, but I've yet to find settings that make the lav mic sound great. This is more indicative of my inexperience, I think, but it's still frustrating for me. I would imagine every camera is going to require different settings in order to get the mic to sound good, so you just have to keep tweaking until you find the perfect settings. Because my camera doesn't have a headphone jack, I can't monitor the audio while it's recording or even during playback, so I have to plug my SD card into my computer, listen to the audio, then go back to my camera, tweak the settings, and try again.Honestly, the built-in mics on my a6500 (stereo front-facing mics) seem to do better than the lav mic in close-up scenarios that aren't in echo-y rooms.On that note though, the mic can be switched out with any lav mic. So I do have the option of getting a lav mic that might have better sound. I included a video of my brother speaking into the mic so you can hear the actual mic quality for yourself.Overall, if you are looking for a good wireless system, this is a great starter kit. You can play around with different lav mics if you don't like the one it comes with. This is a great way to go wireless and really makes shooting video easier when you are moving around or not always close to the camera.