... .Aluminum diaphragm micro-speaker, insure the sound quality.Circular design, exquisite appearance, with 6 buttons.Buttons definition: "MODE", "Stop/Pause","EQ". " ... , MP4, mobile, Portable CD Players, Notebook PC etc.Bottom with red or blue LED light.Build-in lithium battery, rechargeable ... 122gPackage Including 1 * Audio Speaker1 * Audio & USB cable mini speaker with usb/sd/TFcard/fm radio heavy bass