Home / WM4404N WM4404N Specifications of Microphones Freq. Range : 500-950MHz Freq number : 200 Freq stability : ± 10ppm Modulation : ACT IR Port RF output : 10~50mW Audio bandwidth : 40~20000Hz T.H.D. at 1kHz : ≤ 0.5% Power supply : 2 x 1.5V Battery left : 10 hours Specifications of G Receivers Freq Range : 500~950MHz Freq number : 200 Oscillation mode : PLL synthesized Freq stability : ± 10mpp Receive mode : Superheterodyne Input sensitivity : – 90dBm Audio bandwidth : 40~20000Hz T.H.D. at 1kHz : ≤ 0.5% S/N ratio : ≥ 110dB Audio output : Balanced XLR and unbalanced 1 / 4″jack socket Power supply : 220V 50Hzor110V 60Hz