Reproductor musica Mp3/Radio FM Bluetooth color azul usb, With micro SD TF card slot, you can play mp3 format files in the TF card, Radio FM estereo de gran calidad, Wireless portable mini Bluetooth stereo speaker system Saves you from the hassle of tangled wires, Expanded BXS (Bass Xpansion System) drives a fuller, richer low-end response, Built in rechargeable battery , charged by computer via USB interface, IPHONE, , Samsung Galaxy/Note/tablet, Laptop, Tablet PC, etc, Working Range: Up to 10m/33 feet (open space,no block), Battery Charging Voltage:5Vą0.5V Battery Capacity:520mAh, Battery Charge Time:2 hours, Loudspeaker Output:40mm 2.6ohm 3W, Input power: DC 5V, Frequency, Response: 60Hz-18KHz