1. 19mm diameter tweeter + 4-inch mid-bass, golden acoustics, pure sound quality2. 19mm diameter silk dome tweeter, special coating makes the sound performance more delicate and clear3. Ripple corrugated diaphragm, which can reduce segmentation vibration, lower distortion, and fully show the middle and low frequency details4. Precise control of digital audio processing, higher efficiency of Class D digital power amplifier5. High power, free to enjoy, can fully cover 30 square meters of space6. LC capacitive filter circuit, can input the signal frequency band matching the characteristics of the treble and mid-bass unit to obtain a purer sound7. The slightly curved front panel also increases the toughness of the panel, effectively preventing the interference of sound waves8. MDF structure wooden box, effectively reducing resonance interference, natural pure sound9. CSR8635 Bluetooth chipset, better compatibility, more stable performance, longer transmission distance, more convenient to use when connected to mobile phones10. Top button, humanized operation11. Ring indicator light, simple and clear12. Two inputs, connected at the same time13. AUX input sensitivity: about 550mV14. Line in input sensitivity: about 700mV15. Bluetooth input sensitivity: about 550mFFS16. Audio input: AUX, Line in, Bluetooth17. Frequency response range: 67-20000Hz18. Channel: 219. Power: 2x12W20. Cabinet material: wood21. Adjustment mode: button22. Features: digital audio, low-amplification power, inductive capacity frequency division23. Signal-to-noise ratio: greater than or equal to 85 decibels24. Weight: 4kg25. Box size: 238 x 115 x 155mmSpecification: Package Weight One Package Weight 5.40kgs / 11.91lb One Package Size 43cm * 32cm * 22cm / 16.93inch * 12.6inch * 8.66inch Qty per Carton 2 Carton Weight 11.80kgs / 26.01lb Carton Size 44cm * 33cm * 46cm / 17.32inch * 12.99inch * 18.11inch Loading Container 20GP: 399 cartons * 2 pcs = 798 pcs40HQ: 926 cartons * 2 pcs = 1852 pcs