Professional super-directional microphone . 2 operating modes: Normal and TELE. High sensitivity. Advanced Circuit suppressor. 80 Hz - 13 kHz, Super-Cardioid, -66 dB (1v / m bar 1kHz), -50 dB (1v / m bar 1kHz), 136 dB, 108 dB., DC 1.5 V AA battery (not included), 22 x 365 mm, 147.5 g.