Features: 1. It's Compact And Doesn't Take Up Any Space. You Can Wherever You Want! 2. Can Be Attached To The Back, Side Or Bottom Of The Computer Desk! 3. Can Be Pasted Inside The Computer Case. 4. It Can Also Be Attached To The Back Of The Monitor! 5. Use Chip Power Amplifier And 16-Core Internal Magnetic Speaker To Make The Sound More Beautiful! Description: 1. Frequency response range: 60Hz-15KHz 2. Channel: 2 3. Number of speakers: 2 4. Battery capacity: 1000A 5. Material: plastic 6. Playback format: MP3 7. Interface type: USB 8. Output power: 6W 9. Power supply method: USB power supply 10. Bluetooth protocol: 4.1 11. Playing time: 8 hours 12. Speaker adjustment method: Knob 13. Connection method: 3.5MM audio jack 14. Signal-to-noise ratio: ≥75dB 15. Effective distance: 10m Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Material: plastic colour: As Shown Package Contents: 4 Pair 4747 Speakers 4 x Chinese and English instructions Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.