Tune Thunder Rechargeable Wireless Bluetooth Portable Speaker Outdoor USB/TF/FM Radio Stereo. If you like high base then this is the one to get loud and thunderous will connect to your phone quickly. Type: Audio DockCompatible Model: UniversalBrand: SmarTechConnectivity: Wireless Bluetooth connection up to 90 feetCharge: single charge will last 4 hours of continues play.Charging Voltage: DC 5V / 500mAh-1000mAhBuilt-in FM radio tuner and MP3 Player as well.