I'll give it 4 stars based on the other reviews, but I'm going to have to exchange mine to see if they can send me one with a working lav mic screw system that works.

One of the good features of this device is the secure screw, but the two devices that I bought from amazon doesn't fit, and the only one that I bought from B&H works excellent, unfortunately I don't live in

I have spoken with many industry professionals on this matter and here is what I can conclude:A defective screw lock is apparently a common issue on recently manufactured models, and while it does not break the device, it might make the device unsuitable for use on persons participating in heavy physical activity where the microphone can become unplugged