These USB powered desktop speakers offer excellent performance from a compact package. 3.5mm headphone output, plus 3.5mm aux input for connecting to external playback devices. Size: 81W x 118H x 70Dmm.FeaturesPowered By USBPortable and ideal for any notebook or laptop3.5mm auxiliary input to connect with portable devices such as MP3 playersBass reflex port for superior bassHeadphone jack for private listening