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. Built-in Recorder. Built-in Rechargeable Battery: 1800MA/11.1V. Microphone Input (1 mic included). Guital Input. Remote Control Included. Built-in Handle and Wheels. System Type: 8" Woofer + Piezo Tweeter. Frequency Response: 70Hz-18KHz. Sensitivity: 90dB. Impedance: 4 ohm. Peak Power Capacity: 1400 Watts. Output Power: 80W. RMS Power: 35W. Crossover: 6.5KHZ. AC Power Supply: 100V-240V, 60/50Hz. DC Compatible 13.5V (1.5A).