Portable Speaker, Support USB Disk & TF Card Mp3 Format audio files, Remote control, LED Display, FM Radio Bluetooth Function. Rechargeable Battery. With One Wireless Mic Portable Speaker, Subwoofer size: 8 inches, DC Input: 5v=15W, Battery: 3.7V=1800mAh, Frequency response :100Hz-20kHz, Net Weight : 4 Kg, Gross Weight: 5 Kg, Dimension: 310 x 255 x 490 mm.