"It features a variable polar pattern selector allowing you to choose omnidirectional, cardioid and figure-8 as well as six intermediate positions. This variable pattern selector provides the ability to achieve many variations of sound characteristics. The rugged vintage style external power supply houses the polar pattern selector and supplies a consistent voltage to the microphone to achieve optimal performance. There are two features designed to reduce vibrations and noise. First, the capsule is internally shock mounted. Second, each microphone has a custom heavy-duty shock mount that securely holds the microphone and reduces external vibrations and noise."
For more info visit http://www.lautenaudio.com/lt381-oceanus-microphone.htm
and it can be purchased from Sound Pure at http://www.soundpure.com/p/lauten-audio-oceanus-lt-381-microphone/2397
Check out Sound Pure's video showcasing the LT-381 which also shows some great miking techniques.