... MOQ:50pcs Features:Compact and lightweight.Mini digital audio with unique appearance and black colors.Aluminum diaphragm micro-speaker, ... sound quality.Circular design, exquisite appearance, with 6 buttons.Buttons definition: "MODE", "Stop/Pause","EQ". "Back/volume down", "Next/volume ... , mobile, Portable CD Players, Notebook PC etc.Bottom with red or blue LED light.Build-in lithium battery, ...