Micro static transistor technology, directivity cardio, cut down (100Hz and 175Hz), pad (I have not head off the 2 values), I bought them in stereo set, comes in a cardboard storage box (for the price is already well), comes with 2 windshield, 2 supports (somewhat cheap), and two elastic parts and stereo support.
I put 7 for cheap media
I use them mainly to use a battery OH, live in the studio for this use I think the pickups are very good at their job, the sound is clear, not too poorly defined, the highs do not pierce their ears, that not worth a pair to 2000 €, but it's still usable. (Www.myspace.com / lawnmowerstheband to hear the update on a record)
on the other hand I tried to plug a stereo acoustic guitar, and I really liked least, lack of finesse and warmth, no bass