The FS28MS0820-H5.0R with Speakers RoHS is a high-efficiency full-range speaker manufactured by FUET. It is constructed from a quality carbon fiber composite material and high-efficiency neodymium magnets. It has a frequency range of 300Hz to 20kHz and a maximum power rating of 20 watts. It is RoHS compliant, meaning it does not contain any hazardous materials, making it safe for use in many electronics applications. The speaker is designed for consumer audio applications, including computers, MP3 players, and speakers.