Use the U2 for VoIP, language labs, gaming, podcasting or personal audio playback. Condenser microphone is mounted on a flexible gooseneck boom for easy positioning. Headphone transducers provide clean, accurate sound reproduction needed for todays digital audio sources. Headphones are light weight and can be easily cleaned with a light alcohol based cleaner. USB cable and foam windscreen is included. Windows and Macintosh compatible.Main Features:VoIP compatible: Call friends and relatives over the internet for free!Powerful headphone amplifier for full listening fidelityCardioid microphone pick-up pattern for minimal background noiseFlexible gooseneck for easy microphone placementTen-foot USB cable for more freedomSpecifications:Unit Dimensions: 9L x 10.5W x 4.5HUnit Weight: 0.7lb.