... with your computer, laptop, iPhone, iPod, DVD, CD, MP3, MP4, mobile phone, GPS, PSPSupport TF Card. (memory cards NOT included)Portable ... : RMS 3W + 3W THD = 10%Frequency response: 150-1800Hz (±3dB)Signal and noise ratio of power amplifier: ≥80dBLoudspeaker: 1.77" (external ...