I've previously tried three different lavalier microphones, buy this is the best for the money. I don't understand how it works without a battery, it just does.
I've purchased and tried mics from Radio Shack, Audio-Technica, and Shure. All powered, small, condenser mics in the lower price range (under $50 each). Most condenser mics need phantom power either from the recording device or a battery. This one does not. The funny thing is that it was actually louder than my powered Audio-Technica. I don't know what kind of magic is going on there, but it sounds great. In fact, it's so strong and powerful, I think I'll clip it lower on my lapel than the positionThis is a powerful little microphone! It is great for those long phone conversations but it is perfect for vlogging. It gives great sound while cancelling out background noise. I bought it because it is small and I can put it with all of my other gear