SOUL by Ludacris SL150 High-Definition On-Ear Headphones. Advanced Driver and Circuitry Design for Superb Bass, Clear Mids and Highs, Creates High-Precision Audio Balance. iPhone Ready: Compatible with iPhone 4G and 3GS, iPad and iPod. Full Ear Cup Articulation Ensures the Best and Most Comfortable Fit Every Time. Tangle-Resistant Cable for Easy Cable Management, Frequency Range -20 - 20000 Hz; Protective Road Case for Convenience and Storage.