HIGH-FIDELITY & POWERFUL - 10 W quality acoustic drivers, passive vibration, aptX Lossless and Bluetooth 3.0 technology combine to deliver crisp sound with fantastic high, middle, and lows, strong enough to fill up a living room without distortion VERSATILE MODES - Switch easily between Wireless Bluetooth,FM Radio, Micro SD card, USB flash drive and AUX-in. If your buy it mainly for FM radio, Model DY22L or Model DY33L might be a better choice as they have LED display to show channels