This set of mini speakers is specially designed for Desktop, Laptop, Notebook, Tablet PC. Its high-grade loudspeakers will bring you much wonderful music, a super companion for your outdoor activities and daily life.Features:Steady and undistorted bass sound effect with stereo sound surrounding, which brings you wonderful music.Wide Compatibility: Perfect for desktop, laptop, DVD, TV, smartphone, tablet, and other devices with 3.5mm audio port.USB-powered, energy-saving and environmentally-friendly, safe and reliable.Exquisite design. Lightweight and portable, convenient to carry.Enjoy your music through three high-performance loudspeakers.Specification:Model: D-202Material: PlasticOutput Power: 3WPower Supply: DC 5V & USB 5VInput Interface: USB Plug & 3.5mm Audio PlugChannel: 2.1Seperation: ≥40dBSNR: ≥80dBFrequency Response Range: 25Hz-20KHzColor: BlackUSB Cable: approx. 1 mAudio Cable: approx. 1 mMain Speaker Size: approx. 12.8 * 11.6 * 9.6cm / 5.03 * 4.56 * 3.77 inSub Speaker Size: approx. 7 * 6 * 6cm / 2.75 * 2.36 * 2.36 inSpeakers Weight: approx. 582 g / 20.52 ozPackage Size: approx. 23.3 * 15.6 * 12.6cm / 9.17 * 6.14 * 4.96 inPackage Weight: approx. 686 g / 24.19 ozPackage List:1 * Set of Wired Speaker (3 speakers a set)1 * User Manual (Chinese)