LED Colorful Design】 This B39 over ear wireless headphones design with Round loop LED lighting up,Lighting of seven colors, red/blue/green and so on,the colorful lights change along with the rhythm of music on both sides of Bluetooth headphones,listening to music is more dynamic and unique. 【HiFi Stereo Foldable Headphones】 Powerful 40mm speaker and Bluetooth 5.0 technology provide more stable transmission speed，intelligently and fastly to connect bluetooth,360-degree surround stereo sound quality,make hearing more enjoyable.