Type: Dynamic Frequency Range: 300 - 7000 Hz Sensitivity: 56 dB re 1 uV @ 1 kHz/ 103 dBSPL/ .25" Impedance: 150 ± 20% Distortion: < 5% @ 114 dBSPL Altitude Compensation: 50,000 feet Temperature Range: - 62 ºC < t < 70 ºC Weight: ≤ 18 grams MIL-PRF-26542/8-1