DUAL DRIVER DESIGN: Experience crystal-clear music and calls with these earphones’ two drivers (8mm,5mm) – one for bass, one for treble and ultra-clear mid-tones separately. * SECURE FIT: Listen in luxury, thanks to a mold ear hook conforms to the ear for a locked-in fit. * DEEP BASS and INLINE MULTI-FUNCTION: Energetic sound with HEAVY BASS keeps you motivated and INLINE Microphone and remote for easy switching between calls and music. * COMFORTABLE: Noise isolating IN-EAR design helps you focus and three sizes of ear tips conform to your ear’s shape to stay comfortably in place all day. * SPORTS USE: Sweat resistant design for increased durability, ideal for Running, Gym and other Sports use.