Edifier R18T Notebook Desktop Computer Mini Speaker Small Subwoofer, US Plug 1. Small size, simple and practical, convenient to place, closed box design, easy to push, wide rope length 2. Fully enclosed wooden box, effectively reducing box resonance and box sound, with EMC shielding magnetic ring to avoid high magnetic interference 3. Track-type speaker unit, wide sound field, pure sound quality, automatically muted when connected to earphones and speakers 4. Cabinet material: wood 5. Support format: MP3 6. Interface type: AUX 7. Connection method: 3.5MM audio jack 8. Frequency response range: 40-20000Hz 9. Output power: 0.6w 10. Signal to noise ratio: greater than or equal to 80dB 11. Channel: 2 12. Operation mode: knob 13. Number of speakers: 2 14. Speaker unit: 50x90mm, 4 ohm 15. RMS power: 1.4W x 2 16. Input sensitivity: 450mV 17. Packing list: speaker, audio cable, manual, warranty card 18. Weight: 1.47kg 19. Dimensions: main box 85x166x125mm; auxiliary box 85x166x110mm