BT808 20W Desktop Computer Bluetooth Speaker 3D Stereo Sound Effect Home Speaker Features: 1. Adopt 360-degree surround sound + wide-range speaker structure, 3D stereo sound effect 2. Internal magnetic speaker 10W x 2, total 20W 3. Automatic sleep, energy saving 4. If not used for 10s, the speaker will automatically sleep 5. Knob control, easy to operate 6. Two playback modes, you can choose according to your needs Product parameters: 1. Material: plastic, cloth, electronic components 2. Function: voice prompt, call function 3. Bluetooth version: 4.0 4. Transmission distance: 10-12 meters 5. Power: 20W 6. Signal to noise ratio: 85dB 7. Audio interface: 3.5mm AUX interface 8. Frequency range: 2.412GHZ-2.484GHZ 9. Rated impedance: 4 ohms 10. Frequency response range: 200HZ-20KHZ 11. Charging voltage: DC 5V1A 12. Battery capacity: 4500mAh lithium battery 13. Play format: MP3, WMA, WAV 14. Product size: 38 x 6 x 6 cm 15. Weight: 880 grams Packing list: -Speaker x 1 -AUX cable x 1 -Charging cable x 1 -Instruction manual x 1