Brand new polyester sub 811 strong bass sound system

MP3 PLAYBACK From USB and Card
Bluetooth
Built in Amplifier
FM Radio Function
2 Microphone Inputs
SPEAKER Units: Woofer – 8 inches
Speaker Units: Full Range: 5 inches
Output Power: 25000W P.M.P.O
Impedance: 4 Ohms
Sensitivity: 90dB +_ 3dB
Power Supply: 230V/ 50Hz