The music atmosphere light is covered by an alloy one-time molding case. Simply but strong and durable. A great gift for music-lovers, designers and marketers.EASY TO USE WITH USB CABLE - The LED light bars are entirely controlled by ambient sound. No mobile phone, app, or music player is required. Instead, connect the power supply through the USB cable, plug, and play. Perfect for desk decor, birthday party, stage, disco, bars, weddings, celebration, karaoke, roller skating rinks, KTV, family gatherings.