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الشخص الذي يمكن الاتصال به Mr. amanda
Pioneer road, Nanchang, Jiangxi
The headset special for all kinds of communication equipments be used in the loudest of surroundings. The extreme noise in the surrounding be used can reach to **0db. Alternating current impedance: 2***0 (1+/**0%) ohms ( 1kHz) Sensitivity: **5db+/*3db (test with ear muff 1kHz) Frequency Response Range: **0Hz****0Hz
