... Speaker (Use with MP3, MP4, CD, DVD, Ipod, mobile phone, laptop, GPS, PSP) Specifications:Out put: RMS 6W( ... response: 150-18000HZ(+-3dB) Signal and Noise Ratio of Power amplifier: ≥80dB Loud speaker: 1.77inch( ... , GPS, PSP, mobile phone, notebook computer. High density metal shell shows noble and fashionable, out of ordinary, with many ... with MP3, MP4, CD, DVD, Ipod, mobile phone, laptop, GPS, PSP)