Listen better for longer with Flare Audios' earHD 90. A small gadget with enormous benefits for all music lovers. This small device can effectively increase the sound quality and has a 60- 90 degree dispersion for capturing sound. Featuring a unique waveguide, this technology reduces distortion in our ears and upgrades all our audio experiences. earHD makes mid and high-frequency sounds more refined and less disturbing. Our earHD's are made with lightweight and high-grade ABS that provides a comfortable fit inside the ear. Just place it in your ears and give your sound the upgrade of a lifetime. Available in a clear or high gloss black finish, these are a 'one size fits most' solution. You can wear earHD under headphones, while listening to a home stereo, at concerts, gigs, or anywhere you'd like better sound quality. Tested by the Institute of Sound and Vibration Research (ISVR), every pair of earHD includes 1 Flare carry pouch, a handy user guide, and three sizes of our replaceable silicone tips.