Brand N/A Model TWS-2 Quantity 2 piece(s) Color Black Material Iron + plastic Amplifier Class A Frequency response 1000~20000 Hz Number of Channels 2 Input Power 250W Peak Power Output 150W RMS Power Output 50W Input Sensitivity 90dB lnput Impedance 4 ohm Signal To Noise Ratio 90 dB Slewing Rate 100% Input Voltage 10V~15V Speaker Impedance 4 ohm THD (Total Harmonic Distortion) 0 Interface Power supply wired connected Remote Control No Application Car Other Features Temperature: -10'C~60'C; Current: 0.8A; Speaker diameter: 25mm Packing List 2 x Speakers 2 x Back covers 2 x Stands 2 x Stickers 2 x Stereo audio filters (40cm-cable)