CSDC Auzentech Vr Fidelity USB Speakerphone White Connection: USB 5-ft. cable / Portable speaker /Built-in Sound Card Provides High Fidelity Music Playback with Built-in Sound Card. Louder and Ultra Clear Voice Conversation with Echo-free/ Noise Suppression/ Full-Duplex Technologies Omni-Directional (360 degree) Voice Collection within 3-meter (9.84 feet) radius Easier talk or discussion mode in public with Mute Function