I was really into this effect but was
really disappointed when I got it. I think it is the Ultimate Airborne version that I bought, but this entailed putting a gimmick into the top of a bottle (

)
Which made it totally unnatural in most settings. You could not use
any but rather the one provided. And furthermore nothing could be examined at all.
Now Freddie the one you have and are happy with, does it seem to have some of the problems I mentioned or does it work differently?
[edit]: nvm, just saw this
Not a close-up effect but great for that stage worker
.
I guess that was my problem, bought it for a close up effect.