Designed to let you purely focus on the music without outside distractions, the AKG N5005 reference-class, in-ear headphones combine a dynamic driver with a quad-balanced armature driver in each earphone to deliver high-resolution sound with accurate midrange, clear highs, and warm bass. Four interchangeable sound filters give you a choice of bass boost, reference sound, mid-high boost, or high boost, enabling you to modulate the sound according to your personal preference. A detachable Bluetooth cable with a built-in microphone and a three-button universal remote provides a wireless connection for taking calls and controlling media playback hands-free while on the go, with up to eight hours of music play time on a full charge.