Product details of Multimedia Usb Speaker Boom Box BM444

• USB power supply
• Power : 3W * 2
• Jack connection : 3.5
• High performance
• Good quality 
• AC/DC Powered Supported
• Amazing Sound
• Beautiful Design
• USB-Powered
• Easily connected to the laptop/netbook/mp3/the psp/cd and other various sources ,anywhere to enjoy music .
• Plastic material