Wireless Microphone Home Conference Audio TV Computer Live Sound Card Set Dynamic One for Two Microphones Microphone Type: Dynamic Applicable objects: household, special for conferences Display: none With wireless: no Pointing feature: cardioid pointing Channel: 2 Input voltage: 3V With or without stand: none Bluetooth Protocol: No Bluetooth Packing List: receive Microphone Antenna AA battery 6.5 to 3.5 adapter Manual Color: one for one black, one for two black Built-in battery capacity 1200mA-2000mA Battery life 6-8 hours Signal to Noise Ratio 75dB Frequency Response Range 100HZ-20KHZ Battery Capacity 800MAH Using Equipment For audio equipment or sound with a microphone jack Mute Control: Lock Noise Frequency offset: 11kHz Frequency Response: 80Hz-15kHz Frequency Stability: 0.005% SNR: >60dB Distortion: 0.5% (1kHz)vNumber of Channels: Two Channels/Single Channel Sensitivity: -70dB M Use distance: 50 meters in open area Receiver power supply: DC 12V/320mA Transmitter power supply: AA battery Transmit power: 20mW Frequency range: 200MHz-270MHz Output mode: independent and hybrid automatic selection launcher:Frequency stability: 0.005% Carrier output power: 30mW Spurious radiation suppression: >40dB Modulation: vhf Maximum modulation: 75KHz Pickup Type: (Condenser) (LWM-6188/C) Receiver: Receive Sensitivity: 40dB Audio output impedance: 600 Audio output level: 0-0.5V Power supply: AC220-240V 50/60Hz Power Consumption: 1W