Designed for Sport: The JBL Endurance Zone true wireless open-ear sport headphones offer crystal clear sound with durable, ergonomic ear hooks to keep you comfortable and aware of your surroundings Adaptable Audio: These JBL headphones have sensitive 18x11 mm dynamic drivers for balanced sound, while an adaptive bass boost algorithm automatically adjusts to the music volume to keep you moving All-Day Comfort: Liquid silicone earhooks and adaptable memory wire provide optimal comfort, while scratch-resistant material ensures your earbuds stay securely in place, even during sweaty workouts Ready for Anything: With an IP68 waterproof/dustproof rating, these sport headphones withstand it all, offering 32H playtime (8H in earbuds, 24H in the case), plus a 10-min. quick charge via USB-C gives you 3H extra Google Finder: If an earbud pops out, Google Finder helps you locate it by using nearby Bluetooth devices to pinpoint its location and emitting a high-frequency sound when it's within range