There are a of built-in colorful light modes, one-click switching, you can enjoy the wonderful music while enjoying the colorful lights that fit the atmosphere. The dual-frequency diaphragm loudspeaker's ground-type sound waves have a clean and full tone, and the sound is melodious and melodious, as clean and clear as the scene. HIFI sound quality, bass, bring you live sound quality like a concert. Built-in anti-magnetic chip, completely eliminate mobile phone/computer interference, no more current noise. Within 15 meters, the Bluetooth can be connected freely without lag, and the beautiful audio can be listened to at any time. Type: bluetooth speaker Connection : 3.5MM audio jack/Bluetooth 5.0 Interface type: USB Frequency response range: 100HZ-20KHZ Channels: 2 Effective distance: 15 meters Number of speakers: 2 size: 440 x 85 x 87mm Material: ABS colour: black Package Contents: 2 x Speaker Only the above package content, other products are not included. Note: Light 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.