Feature:1. Simple Operation: Connect the USB cable to the power supply and plug the 3.5mm cable into the output of the device (such as PC, laptop, smart phone). Then turn the switch on the bar speaker. Turn the turn button to adjust the volume.2. Superior Quality Sound: Increase the anti magnetic chip, reject static noise. Provides an enjoyable stereo sound experience, let you enjoy heartily the movie, video, music, and game in the room or office.3. High Compatibility: With 3.5mm line input jack, you can connect to many different devices. Such as: PC, laptop, desktop, tablet, all kinds of smart phones, such as 3.5mm jack equipment.4. Exquisite Design: rotation button for easy volume adjustment. Rotating boot, faster and easier. Lighter, body. With your computer perfect match, at the same time let you enjoy fun.5. Save Space: Desktop speakers is compact in size, perfectly placed under the computer screen. Free up desk space, and reduce cable clutter. Bring more tidiness to your desktop.How to Use:Direct use.Specification:Item Type: Computer Speaker Material: ABSPower Supply: USB DC 5VFrequency: 30Hz-15KHzSound Track: 2Sound Source: 3.5mm Aux WireMaximum Decibel: 120dB Package List:1 x Computer Speaker 1 x User Manual