About this item Frequency characteristics: full band (full range); Rated power: 3 (W); Rated impedance: 4 ohms 8 ohms (); Frequency response: 500-20K (kHz). Mini speaker 8ohm 3w sound cavity adopts high-end built-in magnetic speakers, stable performance, tight sealing, convenient and reliable, clear sound, providing long-lasting service! Shape: Rectangle; Diaphragm material: non-paper; Magnetic circuit form: internal magnetic. Micro speaker 8ohm 3w has a wide range of applications. It is compatible with raspberry pi, robots, advertising machines, game machines, integrated machines special speaker, etc. Mini speaker: 8 ohm 3 watt; They can choose 3.3V or 5V, JST-PH2.0mm-2 pin terminal; Full frequency cavity; Dimensions: 0.59'D x 1.1'W x 1.73'H.