Highlights: Output Power: 5W Frequency Response: 90HZ-20Khz S/n Radio: 80 Db Power DC: 5V Adapter Impedance: 4 ohm FM: 87.51080mhz Box Size: 131x55x142mmSize: 11cm x 12cm x 16cm Product Description: With USB/TF card slot, you can play the Mp3 Supply MIC function With FM Radio External audio input With LED Display Built-in Rechargeable Battery What’s in the box: 1 x Speaker Weight: 0.3 SKU: 201014155017