Create your personalized hearing profile and configure your Nura headphones and earbuds with the Nura app. Nura's headphones and earbuds measure your hearing the first time you use them, then adjust the music to match your hearing. Enjoy incredible sound, comfort and convenience with our award-winning technology. Compatible with the Nuraphone, NuraLoop, NuraBuds, NuraTrue and NuraTrue Pro. Visit www.nurasound.com to learn more about our products and technology.