Wire microphone Mic18 Frequency response:100-1000Hz Impedance:600+/-30% Dynamic range:-75+/-3d/B Reality: metal Signal lead: Φ5.0?4.0m Plug: Φ6.3 G .W : 22 KG Packing Number: 50pcs/Carton Inner packing dimension: 28.8?14?7.8cm Outer packing dimension: 70.5?24.3?56.5cm (including connect cable)