The world’s first earphones to utilize the Astria Coaxial Acoustic Architecture. Endorsed by 10 Grammy-Award winning audio producers. A state-of-the-art design which integrates a customized Knowles balanced armature and an 11mm dynamic driver into a single body. Aligned direct-to-ear, Astria eliminates interference while creating harmonised treble and bass for the most natural and expansive sound ever heard from truly wireless earbuds.