Clarification: we will sell this updated version from 16/8/2019, audio quality is better and louder than the older one. Compatible Software: Skype, Zoom, Google Hangout, Microsoft Lync, Cisco, Avaya, Face time, Ding talk, Vonage business, Adobe web, Youtube, ect. FOR PC: you can setup a conference call in seconds. Simply plug it into your computer?s USB port and you?re instantly ready to take or make conference calls in the office, at home, or anywhere else. It's compact, lightweight design maximizes mobility while its integrated cord prevents awkward tangles. FOR PC: features echo cancellation technology to ensure excellent audio clarity on both ends of the line. The High Definition Voice (HD Voice) allows you to hear a broader frequency range when on a call. HD Voice technology ensures your conversations are so clear. Plus, its 360° Omni directional microphone enables use with more than four participants. Reduces unwanted background noise for clear conversation. Great ideal for Dragon speak, Online courses, Skype chat, call center, conference calls, webinar presentations and more. It is able to pick up people standing about 7-10 feet away, or at about a 3-4 persons conference. it is better if you can raise your voice up. Technical Specification?Input: 5V/500mA RMS: 2W Weight: 200g Cable length: 100cm Dimensions:121mmx121mmx35mm Package:?1x USB Microphone 1x USB cable 1x User Manual Please Note:?work with Mac?choose the device for sound in and out, in System Preferences