NuraLoop packs personalized sound into wireless buds
 

Nura's first headphones were certainly a conversation starter. The hybrid design mixed over-ear design, with in-ear buds. The wireless headset's main trick, however, was the built-in audio test that uses otoacoustic emissions to spot any weak spots i...

https://www.engadget.com/2019/01/06/...wireless-buds/