Reinforced metal driver housing, interior and exterior injection mold protection, ballistic materials and thick 3mm audio cable significantly increase durability and overall lifetime;Noise isolating in-ear design combines 9mm stereo drivers and three sizes of interchangeable silicone ear gels to deliver crystal clear comfort for stunning clarity and deeper audio immersion;Features in-line microphone with integrated control button supports voice assist (Siri, Google Now), audio playback control and handsfree calling for compatible devices;Includes protective zippered EVA carrying case with belt strap for quick access and convenience when you're on-the-go;Buy with confidence - limited lifetime warranty provided on all GOgroove AudiOHM RNF series headphones