MK-1 Wireless Echo Microphone

. Frequency Range: 600-960 MHz . Frequency Response: 50Hz ~ 15kHz . S/N Ratio: >105dB(A) . Distortion (1KHz): <0.3% . Modulaton Mode: FM Adjustable Freq. . Max Input Sound Pressure: 130dB SPL . Microhone Pickup: Dynamic . ¼” Microphone Jack Plug (Mini-Jack Adapter Included) . Adjustment channels: 50 CH x2 . Oscillation mode: Phase-locked loop (PLL) frequency synthesis . Frequency stability: ±; 5KHZ . Reception mode: super heterodyne with dual conversion . Receiving sensitivity: ≥-100dBM . Signal to noise ratio: 50 db or higher . LCD screen display . Modulation mode: U Frequency modulation (FM) . Handheld operated: Rechargeable battery . Receiver : rechargeable with charging voltage above 5V/1A . Approximate working distance : 200 ft.