ENVIRONMENT MODE - Environment Mode lets you hear the outside world with the touch of a button. SECURE, OVER-EAR FIT - Your earphones stay in place for unmatched, long-wearing comfort even during high-energy activities. SWEAT & WATER RESISTANT - Sweat and water resistant with an IPX4 Rating when paired with Shure detachable earphones. Designed to pass rigorous quality and durability testing to ensure they’ll maintain peak performance. TRUE WIRELESS ADAPTER GEN 2 - True Wireless Adapter, Gen 2 easily transforms any detachable Shure Sound Isolating Earphones into true wireless (Earphones sold separately). DETACHABLE 3;5mm COMMUNICATION CABLE allows for direct connection to laptops, in-flight entertainment systems and other mobile devices; Secure, over-the-ear design with wireform fit ensures earphones stay in place and cables remain out of the way;. SOUND ISOLATING TECHNOLOGY blocks up to 37 dB of noise to eliminate distractions; Enjoy the most immersive listening experience with a design that keeps earphones in and noise out during exercise or travel;. ERGONOMIC LOW-PROFILE DESIGN with optimized nozzle angle ensures long-wearing comfort and fit;. DUAL-DRIVER HYBRID DESIGN FOR DETAIL SOUND + DISTINCT SEPARATION OF MUSICAL ELEMENTS; Features a balanced armature and dynamic driver combination specially tuned for dynamic bass and extended high frequency detail with natural separation between instruments and clear voice articulation;.