KEY FEATURES SUPERIOR SOUND, NO COMPROMISE: Powered by Sennheiser’s TrueResponse transducer, personalised with the built-in equalizer and with a wide range of Bluetooth codec support (AAC, aptX, SBC) ADAPTABLE ACOUSTICS: Open ear adapters for situational awareness so you can stay in tune with the world and closed ear adapters for passive noise cancellation to block distractions so you can focus on your workout SECURE CUSTOMISED FIT: Compact, ergonomic design, interchangeable fins and a choice...