Up to 28 hours of listening with quick charge - 7 hours per charge and up to 28 hours of listening with the charging case. A 5-minute quick charge provides an hour of battery life. No more battery anxiety. Secure Fit - The ergonomic and flexible ear hook with balanced earbud weight design provides a soft and secure grip. Situational Awareness - Stay connected with your favorite audio and your surroundings at the same time. Incredible Audio Experience - DirectPitch technology by Shokz provides you premium audio quality while keeping your ears open. Open-Ear Design for Ultimate Comfort - OpenFit continues the Shokz open-ear concept with a compact earbud design. The ergonomic design with ultra-soft silicone cushion provides you with an incredibly comfortable experience.