• Built-in Pre-Amplifier

• Mp3 playback from USB & SD CARD, BLUE TOOTH READY

• FM radio function

• Microphone input, 1 slot with AUX Input

• Built-in rechargeable battery 3.7 volts

• Impedance 4 ohms

• USB Charger port 5 volts

• Speaker size 6.5” inches

• RMS Power 5 watts

• Output Power 25 watts