Features: High- omnidirectional microphone 360° audio pickup and 6m radius pickup . Built-in 8W speaker can be used as a loudspeaker of computers or laptops for video conference. Built-in DSP chip that can eliminate echo reduce noise efficiently and provide more clear sound. USB plug & play no driver required; compatible with Windows & systems simple and convenient to use. With microphone and speaker mute buttons and supports speaker intermittent mute function. With 3.5mm audio input & output jacks for connecting external speaker and microphone. Ideal for video conference internet interview online education video call etc. Specifications: Color: Black Sound Pick Up : max. radius 6 meters Microphone: 1 * Omnidirectional Condenser Microphone Speaker: 1 * 4Ω 8W Speaker Speaker Sampling Frequency: 24KHz Microphone Sampling Frequency: 16KHz Connection: USB interface Compatible System: for Windows 10/ 8/ 7/ / XP/ 2000; for Mac10.5 Supply: USB 5V 500mA Echo Offset: max. 256ms Noise: ＜ 48dBA Audio Processing: AEC/AGC/NR/NLP/ALC Item Size: 34.5 * 34.5 * 7cm / 13.6 * 13.6 * 2.8in Item Weight: 642g / 1.4lb Package Size: 40.5 * 34.5 * 9.5cm / 15.9 * 13.6 * 3.7in Package Weight: 1450g / 3.2lb Note: Computer showed in picture is not included. Package List: 1 * Conference Microphone 1 * USB Cable(about 5m) 1 * User s Manual(English)