Best For A Single Room Multicolor Disco LED Lights Bluetooth Connectivity FM Radio Micro SD Card Supported Li-ion Rechargeable Battery Wireless Stereo Twin Speaker Function Wireless Transmission Range: Up to 10m Speaker Drive size: 3 inch Output Power: 5W Frequency Response: 100 Hz – 20 KH z Signal to Noise Ratio: 85 dB FM Scan Range: 87.5 – 108.0 MHz USB Charging: DC 5V Battery Capacity: 600 mAh Charging Time 2-3 Hours Dimension: 12 x 10 x 18 cm