The Dual 100-Watt 3-Way Indoor/Outdoor Speakers deliver high-fidelity sound in both interior and exterior environments. The speakers have a 20 mm Piezo dome tweeter that delivers realistic high frequencies, while their 4 in. Polyelite PVA woofer provides great surround sound. Weather resistant, these durable speakers feature a 100 Hz - 20 KHz frequency response for faithful audio reproduction. Brackets are included for convenient installation on a wall or ceiling.