Anker SoundCore AeroFit True Wireless Headphones, IPX7, 42H Battery Life, Bluetooth 5.3, White Unparalleled Comfort AeroFit Open-Ear Headphones utilize a lightweight and compact design optimized for small ears, allowing you to enjoy comfortable listening. AeroFit gradually adapts to your ears, providing greater comfort the longer you wear them. Improved Awareness Be aware of your surroundings, such as public transportation announcements and approaching cars. Stay connected to the world around you with the AeroFit Open-Ear Headphones. Balanced and Clear Sound AeroFit drivers feature composite diaphragms with titanium-coated domes, so you can enjoy well-balanced sound with symphonic mids, an expansive soundstage, and clear highs. Clear Calls with 4 Microphones and AI AeroFit True Wireless Headphones feature 4 microphones and an AI noise reduction algorithm to deliver impeccable call quality for everyday conversations. IPX7 Certified with SweatGuard AeroFit leads in water and sweat-resistant performance. Using Soundcore's exclusive SweatGuard technology, nano-coating, and a unique design, it provides total protection for critical components.