... USB/FM line in 3.differnt color option 1, the product is suitable for computer, notebook, MP3, MP4 and ... circuit, wide range, natural sound and delicate, soft and fresh, clear and crisp, is a good tool to ... 0 hi-fi system, high frequency sound clear and transparent, full-range stereo sound 4,3.5 ... carry. 6, the product comes with USB power interface, a plug and play anytime, anywhere, perfect for laptop