JBL OpenSound technology support buds-free design with 18x11mm dynamic drivers. High-grade liquid silicone earhook and adaptable memory wire for secure fit. IP68 Water and dustproof against sweat rain salt water and sand. 4 Mics for crisp clear calls and suppresses noise. Hydrodynamic windproof design. Up to 8 hours of play time + 24 hours with case. JBL Headphones app - customize sound settings. Google Fast Pair with Bluetooth device. Google Finder and Google Audio Switch. Multi-point connection - pair with up to 2 devices.