8" High Efficient Woofer & Piezo Tweeter. Built-in BT Compatible Allows Your Speaker to Wirelessly Connect to BT Enabled Devices. FM Radio. LED Display. Built-in Rechargeable Battery. USB Input Allows You to Connect Your Non-BT External Audio Devices. SD Card Slot Allows You to Play Your Music from Your SD Card. One Guitar Input. One Microphone Jack. Remote Control Included. Built-in Handle and Wheels. System Type: 8" High Efficient Woofer & Piezo Tweeter. Frequency Response: 45Hz-20KHz. Sensitivity: 90dB. Impedance: 4 ohm. Peak Power Capacity: 1400 Watts. Output Power: 80W. RMS Power: 40W. Crossover: 6.5KHZ. High Frequency: Piezo Tweeter. Low Frequency: 8" Woofer. AC Power Supply: 100V-240V, 60/50Hz. DC: 1.5A 13.5V Adapter Supply.