Fangrui Product Details 1. Bs-36 20w Multi-function 3d Stereo Surround Bluetooth Speaker Subwoofer Soundbar 2. Bluetooth: 3. Chip: Ac6901a 4. Bluetooth Connection Distance: 10m 5. Bluetooth Version: V4.2+br+edr+ble 6. Transmission Power: 4dbm 7. Frequency: 2402mhz-2480mhz 8. Supported Formats: Wmaapemp3flac 9. Audio: 10. Speaker Device: Internal Magnetic Speaker 11. Rated Power: 5wx4 12. Diaphragm Parameters: Air Duct Device 13. Frequency Response: 20hz-20khz 14. Signal-to-noise Ratio: -80db 15. Rated Impedance: 4 Ohms 16. Total Harmonic Distortion: 17. Music File Format: Wmaapemp3flac 18. Storage Type: Wmaapemp3flac 19. Input Audio Source Type: Support Bluetoothtf Cardu Disk3.5mm 20. Waterproof Function: Ipx4 21. Power Supply: 22. Type: 18650 Aluminum Polymer Battery 23. Rated Voltage: 7.4v 24. Battery Capacity: 2000ma 25. Battery Life: 500 Times 26. Charging Voltagecurrent: Overcharge Protection (8.40±0.05) Vover Discharge Protection (5.0±0.1) V 27. Charging Mode: Dc 5v 28. Charging Time: About 4h 29. Play Talk Time: 30. Middle Volume Use Time: About 5h 31. Volume (max) Usage Time: About 2.5h 32. Standby Time: 120h 33. Volume Segment: 0-15 34. Material: Metal+abs+pvc+silicone 35. Size: 490×50×50mm 36. Weight: Bare Machine: 731g, Main Body: 616g, Base: 115g 37. Features: 38. Exquisite And Compact Appearance, With Extremely Narrow Bezel Design, Delicate And Elegant. 39. 3d Surround Sound Effect, Bringing You The Audio-visual Effect Like A Home Theater. 40. Humanized Design, Can Be Split Or Spliced To Meet Your Personal Preferences. 41. Compatible With A Variety Of Devices, Support U Disk, Tf Card, 3.5mmaux Playback Source, Easy To Use. 42. Adopt 4 5w High-quality Internal Magnetic Speakers + Bilateral Air Duct Devices, Coupled With Professional Sound Quality Adjustment, Presenting A Clear And Shocking Music Experience.