About this item Compatible with Arduino, Robot, Raspberry Pi, advertising machines, game machines, integrated machines, and various projects. 8 ohm 5 watt; can operate at 3.3V or 5V, with JST-PH2.5mm-2 pin terminal; full frequency cavity; dimensions 0.83'D x 1.77'W x 3.94'H. Power: Rated Power / Maximum Power 5.0W / 5.5W. Wide application: Suitable for various digital products such as advertising machines, LCD TVs, monitors, sofa massage chairs, etc. Frequency characteristics: Full band (full range); Rated power: 3 (W); Rated impedance: 8 ohms (); Frequency response: 0-20K (kHz). High quality: The entire cavity is tightly sealed with a large volume, sturdy and durable. Dimensions: 0.83'D x 1.77'W x 3.94'H.