Concerning this item Open-Ear Air Conduction: The non-intrusive design of the AeroFit Pro open-ear headphones removes discomfort and enables you to have a comfortable, breathable listening experience. Compared to bone conduction, air conduction produces richer audio. Soft, Stable, and Snug: Made with premium 0.7mm thick titanium memory wire, these ergonomically designed ear hooks fit the shape of any and all ears. For complete comfort, each ear hook is composed of incredibly soft materials with a delicate finish. Open Listening, Uncompromising Sound: The AeroFit Pro open-ear headphones have a substantial bass and true spatial audio thanks to their 16.2mm oversized titanium-coated diaphragm. It provides unexpected sound quality and high-fidelity music thanks to support for LDAC technology. IPX5 Water Resistant with SweatGuard: AeroFit Pro employs a special chamber design and nano-coating.