Mini Desktop Multi-Function Smart Wireless Charging Bluetooth Speaker with Alarm Clock & Phone Holder Function 1. One-key wake up, no need to press button, no need to connect 2. Stereoscopic 3D, 360-degree spherical sealed cabinet, bass engine design 3. Acrylic mirror design, clock synchronization, alarm setting 4. Material: Plastic 5. Channel: 2.1 6. Impedance: 4 ohms 7. Frequency response range: 100-20000Hz 8. Connection method: Bluetooth connection 9. Interface type: USB 10. Signal to noise ratio: greater than or equal to 75dB 11. Number of speakers: 2 12. Effective distance: 10 meters 13. Power supply mode: built-in lithium battery 14. Bluetooth protocol: 5.0 15. Playing time: 6 hours 16. Function: insert card, voice prompt, AI smart phone holder + wireless charging, capable of voice interaction, clock display, alarm setting, U disk playback, TF card playback 17. Play format: MP3 18. Battery capacity: 4000mAh 19. Audio output power: 8W 20. Wireless charging power: 10W 21. Wireless charging voltage: 5-9V 22. Packing list: box, charging cable, manual 23. Dimensions: 133x128x128mm 24. Weight: 780g