1> 2.0 laptop computer mini speaker 2> high efficiency, low power consumption equipment 3> 3.5 mm plug 4> USB 5V input mini speakersUse to laptop/computer/mobile phone/Mp3,4 Welcome to enquiry!!! Specification1. Rated Power: 3w*22. Frequency response: 90-20kHz3. Distortion: <0.3%4. Separatio: >50dB5. SNR: > 60dB6. Audio source: MP3,MP4,CD,DVD,iPod,iPhone,GPS,PSP,mobile phone,laptop etc..7. Audio ...