USB 2.0 Omni-Directional 3m Microphone

Small Size 3M Radios USB 2.0 Microphone with Bluetooth AdvantagesThree alternate mics, best radio is 3M.The conference call can be connected to the computer for audio and video conferencing applications based on Internet technology; Support QQ, Skype and other voice software. Only 340g, it's easy to achieve conference hands free calls. Function1) 3M Radios 2) 85 Db Speaker 3) 3 Alternate Microphone 4) USB interface -PC 5) Auto Adjust echo cancellation 6) Auto Adjust human voice tracking   Model No.WS-AM5InterfaceUSB2.0 Full Speed InterfaceMax. Power2.5WPower SupplyUSB Power Supply (5V/500mA)Radio InterferenceVCCI Level BOperating EnvironmentTemp.:0°C - 40°C, Humidity: 20 - 85%(no frost)SizeProduct: 170mm x 150mm x 30mm(L x W x H) / Packing 240mm x 170mm x 45mm(L x W x H) Weight340g(Camera)/052g(packing)Computer EnvironmentWindowns 10(64bit/32bit), Windowns 8.1(64bit/32bit), Windowns 8 (64bit/32bit), Windowns 7(64bit/32bit), Vista SP1(32bit), Vista SP2(32bit), Windows 2000 SP4, Mac OS X 10.5(only equiped with Intel processor machine)AccessoriesUSB cable(2.0m), Manual, Portable BagOthersFirmware update(using PC by USB Cable)Audio Parameters Microphone3(one way microphone)Speaker1(mono cycle)VolumeMax 85dB(0.5M)Frequency Bandwidth300 - 20,000HzSignal ProcessingAdaptive echo canceller, noise reuction, 3 Alternative Mic Auto Adjustment  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1