This is a super cardioid dynamic vocal microphone.

OVERALL OPINION

I have this microphone for the past 5 years. I tried to start a micro for recovery of the trumpet and my budget did not allow me to buy a gooseneck microphone. In addition, I had a microphone able to withstand high sound pressure (> 120dB). Dear BG2.1 is not capable.
The seller then advised me that microphone.
Successful trial in terms of resistance to the sound pressure level (150 dB max). For cons, I'm more reserved with regard to the sound because the microphone tends to color the sound frequencies that are not at all with the sound of the trumpet. You have to play on equalization thoroughly. And of course, as the microphone is not attached to the trumpet, you need a good compressor and not to move while shooting.
Over time, paint the body of the microphone tends to be the trunk. The machined brass, it's not very nice. Bad for finishing.
Otherwise, in singing, he is correct with a good dynamic, but I much prefer the 2.1 for the BG.

In retrospect, and especially the budget, I will take really a gooseneck for the resumption of the trumpet.