EMEET Office Core M1A is a Zoom-certified plug-and-play USB Speakerphone. Two Omni-Directional Microphones: Pick up voices from any direction. No need to stick to your seat for the whole meeting. Full Duplex Communication: Experience natural conversation as to feel that you are talking face to face. Small and Portable: A pocket size of 4.4 inches in diameter and 1.4 inches in thickness enables you to always find for it a place in your bag. Noise Reduction and Echo Cancellation: Algorithms Filter out background noise and simultaneously enhance your voice to ensure you are clearly heard. Universal Compatibility: Compatible with all mainstream operation systems and meeting platforms. Zoom Certified: Work perfectly with mainstream meeting platforms, Zoom, Microsoft Teams, Skype, and more.