Grabación sonora. Micro MM-HLSC-3 Cardioid Stereo

Y el el otro extremo, el de la discreción, este micro para grabar sin ser visto. Parece un juego de palabras, verdad?

LITERAL:
The (MM-HLSC-3) is a croakie mounted microphone option of the (MM-HLSC-2). The microphone capsules are completely and permanently mounted inside suiters styles croakies. These croakies will mount into standard thickness eyeglass frames. Eyeglasses are not included. Must specify color of croakies. The croakies are available in gray/black or just plain black.

Specifications:
Frequency Response: 30 – 20,000 Hz.
Open Circuit Sensitivity: 8 mv/pa +/- 2.5db
Signal to noise ratio: 65db
Maximum Input Sound Level: 138 db SPL without a battery module!

+información aquí