1,portable pc speaker 2,stereo 2.0 function 3.nice design for promotion 4,good quality with competitive price Specification:Product Size: ... S/N: >65dB Frequency Response: 20HZ-18KHZFeature:1,2" vollbid high quality horn, pure tamber. 2,USB power supply. 3,standard 3.5 ... quality matal mesh. 7,natural conch vesins backcover designMore pictures for reference: speaker usb mini for computer