EZMAX Bluetooth Speaker USB Flash Disk TF Card Multi-Function Colorful LED Portable Wileress Speaker FM Radio (Gold) Colorful LED Flash, compact and portable, convenient to carry and use it indoor or outdoor. With USB And micro SD/ TF card slot, you can play mp3 / mp4 format files in the USB Flash Disk /TF card Support A2DP, AVRCP, headset, handsfree profile, Expanded BXS (Bass Xpansion System) drives a fuller, richer low-end response Built in rechargeable battery , charged by computer via USB interface This model of speaker supports any mobile device comes with Bluetooth function such as For IPHONE, For IPAD, Samsung Galaxy/Note/tablet, Laptop, Tablet PC, etc