ELECOM PC Speaker Connection Compact Lightweight Easy Connection Music Black 3.5mm [For PCs, Smartphones, Players, etc.] MS-P08UECBK

No outlet required. Easy PC speaker It is a USB power type that does not require a household power source. You can easily enjoy it by connecting it to your computer's USB port. Since the input type is a highly versatile 3.5mm stereo mini jack connection, it can be connected not only to a computer but also to a variety of devices. Adopts a φ50mm round full-range driver to achieve well-balanced and stable sound. It has a built-in amplifier and comes with a "volume controller" that allows you to easily adjust the volume at hand.