1> 2.0 laptop computer mini speaker 2> high efficiency, low power consumption ... mm plug 4> USB 5V input mini speakersUse to laptop/computer/mobile phone/Mp3,4 Welcome to enquiry!!! Specification1. ... ,MP4,CD,DVD,iPod,iPhone,GPS,PSP,mobile phone,laptop etc..7. Audio input: 3.5mm earphone jack. ... 66pcs/CTN Product Picture: Cheaper 2.0 mini laptop speakers , Square 2.0 computer speaker , USB power support