Model ZTPA-MIC Capsule Type Dynamic Frequency response 50Hz-16 KHz Sensitivity - 73dB ± 3 dB Output impedance (ohms) 600Ω ± 30 % at 1 K Hz Polar Pattern Cardioid Working voltage -- Micro tube length 455mm Base size (w * d * h) 115 * 138 * 40 mm Anti-interference Anti-mobile phone, anti-electromagnetic Net weight 1.1KG Gross weight 1.9KG Packing size 450x175x75mm