Crosley CR3111A-BK Cadence Cube Bluetooth Speaker, Black Built-in Bluetooth receiver allows you to stream music wirelessly to the stereo speakers Designed to fit perfectly in your cube storage system Magnetic speaker grill and audio-grade cabinet blends seamlessly into its surroundings Powerful 40W output with 5.25" woofer and 1" soft dome tweeter Frequency response: 20 Hz - 20 KHz Included components: warranty card Power source type: corded electric