Specifications: Condition: Brand New Item Type: Moving Coil Speaker Purpose: Amplified Rated Power: 3W Rated Impedance: 4Ω Frequency Response: 170kHz Directivity: All Sensitivity: 100dB/W SNR: 1dB Harmonic Distortion: 1TMD% Max Diameter: 4cm/1.57in Magnet Diameter: 2.2cm/0.87in Thickness: 2cm/0.79in Package : 2 x Speaker