ERZhen 600GT UHF Wireless 4ch Handheld Microphone System for Speech Meeting

Features Using traditional FM modulation technology for superior RF performance and audio performanceSmall transmission delay and long transmission distanceFully integrated chip solution stable product performance4 x 60 adjustable frequency pointsEnhanced wireless receptionBeautiful LCD displayWith automatic search for clean channelsWith 4 hand held transmitters and 4 headset microphonesVolume adjustment Specifications System parametersFrequency range 610 690MHzTransmit power 10000KWDynamic range 100dBComprehensive distortion 0 5 Frequency response 30 18 KHzReceive sensitivity 108dBm 12dB SINAD Transmitter hand held Transmit power 30mwSpurious emission 40db with br Battery voltage AA1 5V 2 Battery is not includes Battery life 10h Package Included 1 x Wireless System4 x Transmitter4 x Headset mic1 x Charger1 x Cable1 x Instruction manual