JBL Endurance Zone True Wireless Open-Ear Sport Headphones The dynamic sound, all-day comfort, and rugged design of JBL Endurance Zone earbuds will inspire you to reach for your physical limits and beyond. JBL OpenSound technology fuels your workout with punchy sound from a perfect listening angle that keeps your ears free, but aware of the surroundings. And there's minimal sound leakage-because the person on the next yoga mat over doesn't need to hear what you're listening to. The comfortable, lightweight design keeps you going for hours, while the secure ergonomic earhook curve and rainproof, dustproof, and sweatproof design lets you exercise as long and as hard as you like, in even the wettest weather. Stay motivated with up to 32 hours of combined battery life. These earbuds are serious workout gear, designed for your hardest workouts. Product Highlights: Open wireless earbuds with a sport-friendly fit 18mm x 11mm dynamic drivers produce smooth audio with minimal leakage for enhanc