Compatible devices: Smartphones, Tablet, Connectivity technology: Wired Power source type: Corded Electric, The built-in omnidirectional microphone reliably picks up sound and is flexible The built-in microphone is omnidirectional which picks up sound with reliability and is flexible which allows you to adjust the position for optimal performance The Xtream H5U has a built-in soundcard, allowing direct plug-and-play with a simple USB connection and eliminating The need for separate audio and microphone connection. The speakers' 40mm drivers deliver clear and crisp stereo sound