Clarification: We will sell this Updated Version from 8/14/2019, audio quality is louder and better than the older one.Support Windows, Mac OS, Linux, Chrome Compatible Software: Skype, Zoom, Google Hangout, Microsoft Teams, Cisco, Avaya, Face time, Ding talk, Vonage business, Adobe web, 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 also 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. Crystal Clear Chat -- 360° Omni directional microphone which can pick-up your voice loud & clear. Reduces unwanted background noise for clear conversation. Great ideal for Dragon speak, Online courses, Skype chat, call center, conference calls, webinar presentations and moreIt 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 upIf you set the default speaker to this device, you can also use it as a small speaker to play music from your PC.Technical Specification Input: 5V/500mA RMS: 2W Weight: 200g/7oz Cable length: 100cm/3.28ftDimensions:121mmx121mmx35mm/4.76inx4.76inx1.38inPackage: 1x USB Speaker phone 1x USB cable 1x User Manual 30 days money back, 60 days free return.Please Note: work with Mac?choose the device for sound in and out, in System Preferences