ELECOM 4W Compact Speaker with Mini USB-Powered 3.5mm Plug, Black, MS-P08U2BK

These 2.0-channel stereo speakers have a maximum practical output of 4.0W. Powered by a USB-A port on a computer or other device, you can easily enjoy stereo sound. It is a USB powered type that does not require AC power and can be easily used by connecting it to a USB-A port on your computer. It has a versatile φ3.5 mini plug input type, so it can be connected to a variety of devices, not just computers. It uses a φ50mm round full-range driver to deliver well-balanced and stable sound. It has a built-in amplifier and a volume controller that allows you to easily adjust the volume at hand.