Pure Acoustics Wireless Portable Bluetooth PA Speaker System with Built-in Rechargeable Battery - Includes Wireless Mic MCP-50 Entertainment Medium Sized - Silver Grille Bluetooth Connectivity - connects wirelessly to any bluetooth enabled device Portable Bluetooth PA system includes a Wireless microphone with separate volume & echo controls Auxiliary Input - Plug in your Smartphones, tablets or MP3 players and sing along USB Port and SD Card Slot - Easy access to music stored on your memory cards and flash drives Built-in rechargeable battery delivers up to 10 hours of non-stop entertainment