Specifications: USB cable for power, plug and play. Clip-on design allows to fix onto laptop, notebook or PC, and easy to remove. Two stereo speakers can reach a balance sound effect, pure and stereo, and joint together to stand on desk. Built-in volume control, convenient to adjust volume. 3.5mm audio jack, suitable for most of audio players. Compatible with for Window XP, for Vista, for Win7/8, for Mac OS X. Lightweight and portable to carry anywhere you like. Immerse yourself in the rich sound of music, movies, and game. Item Name: Stereo Speaker Material: Plastic Speaker System: 2.0 Speaker Speaker Unit: 2 x 40mm Horn Total Power: 6W Voltage: USB DC 5V Features: Portable, Lightweight, Stereo, Clip-on Type Max. Folder Width: 2.1cm/0.83"; (Approx.) Item Size: 8.8cm x 2.3cm x 6.3cm/3.46"; x 0.91"; x 2.48"; (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Stereo Speaker