Anker's Soundcore Model: A3872H1; AeroFit Wireless Earbuds; Black Unmatched Comfort: You can enjoy breathable listening with AeroFit open-ear headphones because of their open-ear, lightweight, and compact design. As you wear Aerofit more, they gradually mold to your ears, increasing in comfort. Enhanced Awareness: Pay attention to your surroundings, including approaching vehicles and announcements from public transportation. AeroFit open-ear headphones help you stay aware of your surroundings. Sound that is Clear and Balanced: AeroFit's drivers have titanium-coated dome composite diaphragms that produce a wide soundstage, symphonic mids, and crystal-clear highs. Crisp Calls with 4 Mics and AI: The AI Noise Reduction Algorithm and 4 mics of the AeroFit open-ear headphones provide crystal-clear call quality for regular conversations. IPX7