15" High Efficient Woofer & Piezo Tweeter. Built-in BT Compatible: Wirelessly Connect to BT Enabled Devices. Disco Lights Dance to the Beat of the Music. FM Radio. LED Display. USB Input Allows You to Connect Your Non-BT External Audio Devices. Micro SD Card Slot Allows You to Play Your Music from Your SD Card. AUX Input Allows You to Connect Your External Devices. Built-in Rechargeable Battery (12V 3Ah). One Microphone Jack (1 mic included). Remote Control Included. Built-in Handle and Wheels. System Type: 15" High Efficient Woofer & 7" Tweeter. Frequency Response: 40Hz-20KHz. Sensitivity: 87dB. Impedance: 3 ohm. Peak Power Capacity: 3000 Watts. Output Power: 80W. RMS Power: 50W. High Frequency: Piezo Tweeter. Low Frequency: 15" Woofer. AC Power Supply: 100V-240V, 60/50Hz. DC: 15V 2A Adapter Supply.