Key Product Info . Smartphone-compatible with inline remote mic EXTRA BASS for club-like sound Lightweight for ultimate music mobility 12 mm neodymium drivers for powerful balanced sound. 12 mm neodymium driver units Specially developed 12 mm drivers combine a compact lightweight design with a high sensitivity of 112 d B/m W for powerful sound without distortion at high volumes. Inline remote & mic for hands-free calls Take hands-free calls & switch tracks without ever having to touch your smartphone thanks to the inline remote & mic. Powered Bass Duct++ for extra deep bass Powered Bass Duct++ technology delivers deep responsive bass & powerful sub-bass making it perfect for low-end focused music styles. Tangle-free cable The cable has a serrated design to resist snags & tangles keeping your headphones knot-free..