ECHThe FS-1340 with Speakers ROHS manufactured by FUETECH is an external stereo audio system designed for use with PCs, laptops, and MP3 players. It features built-in amplifiers, dual full range 4-inch ferrite speakers, and a 3.5mm audio input. The design includes a volume control knob, LED indicators for power and volume, and an independent bass adjustment dial. The FS-1340 meets RoHS (Restriction of Hazardous Substances) and FCC standards for electronic materials. It is compatible with most PCs, laptops, and mobile devices, and provides enhanced sound and clarity for reliable audio enjoyment.