Mvox MV100 USB Speakerphone, Black. The miniVox MV100 is a high quality and portable USB speakerphone with DSP voice processing technologies. Ideal for making loud and clear VoIP calls anywhere. Superior sound quality with noise and echo cancellation. Full duplex speaker phone with 110dB peak volume for natural concurrent two-way conversation. Speaker: 2w peak, 40mm,4ohm, 500Hz to 5KHz. 8KHz input sampling rate. USB Audio. 2.5mm headset jack. Note: The MV100 is not compatible with Microsoft Windows Vista and Mac OS 10.3.9 or higher! Dimensions: 3.2 x 2.2 x 0.8 inches (8.1 x 5.5 x 2.0 cm). DSP voice Processor . 40 mm mylar speaker and Electret Condenser omni-directional microphones. Package Includes: MV100 USB Speakerphone plus earpiece, USB type A to mini USB cable, and user manual.