USB Powered - Single USB connection both powers and streams audio Wireless Audio - Bluetooth 5.3 enables faster connection and stable audio transmission to your phones and tablets PC and Mac compatible - The built-in sound card allows you to connect to your PC or Mac via a single USB cable. Full Range Sound - The 2.75-inch full-range unit delivers excellent sound with a compact footprint Perfect for School, Office, Meeting room settings, all you need is a laptop or mobile device to enjoy room filling sound