Type: Dynamic Frequency Range: 200 - 6000 Hz Sensitivity: 2.5-5MV @ 1 kHz re 74db SPL Impedance: 4 + 6 Ω Distortion: < 6 % @ 114dB SPL Altitude Compensation: 50,000 feet Temperature Range: - 54 ºC < t < 55 ºC Weight: ≤ 16 grams MIL-PRF-26542/4