SPECIFICATION :SOUND PICK UP RANGE MAX RADIUS 2MMICROPHONE 1 * OMNIDIRECTIONAL CONDENSER MICROPHONESPEAKER 1 * 40 3W SPEAKERSPEAKER SAMPING FREQUENCY 16 KHZMICROPHONE SAMPLING FREQUENCY 16 KHZMICROPHONE SAMPLING FREQUENCY 8KHzCONNECTION USB INTERFACECOMPATIBLE SYSTEM FOR WINDOWS 10/8/7/VISTA /VISTA/XP/2000/MAC 10.5POWER SUPPLY USB DC 5V 500MAECHO OFFSET MAX 128MSNOISE <48dBAAUDIO PROCESSING AEC/AGV/NR/NLP/ALCPAKET SUDAH TERMASUK :1 x Conference Microphone1 X USB CABLE (ABOUT 1.5M)1 x USER MANUAL