Secure Fit andPerfect Comfort. Inspired by the golden spiral, OpenFit 2+&';s flexible ear hook ensures a personalized fit. Crafted with Shokz Ultra-Soft Silicone(TM) 2.0, they offer unparalleled comfort. Non-stop battery life. Up to 48 hoursof total listening time. Up to 11 hoursof battery life with a single charge. A quick 10-minute chargedelivers 2 hours of playtime. With Qi wireless chargingyou just place it down and power up. Open-Ear Design for Situational Awareness. Stay in the game and connect to your world.