Portable Bluetooth Speaker 20W Subwoofer Heavy Bass Wireless Outdoor Speaker MP3 Player Line in Speakers Support Remote Control FM Radio TF Card LCD Display for Home Party Phone Computer PC Specification: Type: Wireless Bluetooth Speaker Bluetooth Version: 4.2 Input Impedance: 10KΩ Bass Unit Impedance: 4Ω Input: DC 5V Power: 20W Charging Time: About 3H Playing Time: About 5-7H (depends on playing volume) Battery Capacity: 3500mAh Frequency Response: 80Hz-20KHz Control: Volume/BT/Remote Control/USB/TF Size: 120*155*190mm .
eBay