professional uhf dual microphone system, 2-channels handheld for indoor home outdoor ktv party speakers

package includes:1/2 x microphone1 x usb receiver1 x 3.5mm audio cable1 x 3.5mm to 6.35mm adapter specifications:model: v10vhf frequency range: 200mhz-270mhzmodel: v20uhf frequency range: 700mhz-800mhzcolor: blackmaterial: plastic+metalmicrophone size: approx.9.6x1.9inchaudio cable length: approx. 24 inchusb receiver size: 3x0.9 inchaudio frequency response: 40hz-15khzaudio dynamic range: >100dbaudio output: 0-200mvreceive distance: ã£âƒã¢âƒã£â‚ã¢â¢ã£âƒã¢â‚ã£â‚ã¢â‰ã£âƒã¢â‚ã£â‚ã¢â¥80mtransmitter working current: <80mapower supply: 2 x aa battery (not included)operating temperature: -10 - 50ã£âƒã¢âƒã£â‚ã¢â¢ã£âƒã¢â‚ã£â‚ã¢â„ã£âƒã¢â‚ã£â‚ã¢âƒfitment: all equipments with wired microphone interface are suitable.features:- adopts uhf technology, remote transmission makes operation easier without annoying wires, can achieve 80m of the transmission distance. broader frequency range, less interference, showing your voice easily and ly- adopts the exacting complete electronic circuit control, capture rich, full-bo d sound from sources that are directly in front of the microphone. for all events like karaoke, live-performances, conference, church, school, hall, party, etc.- can used with 3.5mm and 6.35mm female interface devices.- usb receiver power supply by usb charger,powbank and more.- suitable for studio / karaoke / radio / etc.- suitable for teacher guides, sing, speech conference and etc.