Superior sound for calls and music. Two microphones in each bud that work together to filter out background noise and ensure your voice is heard clearly. All-day power. Enjoy up to 9 hours of battery life ƒ?? 3 hours in the earbuds and an additional 6 hours in charging case. All-day comfort and a secure fit. Customizable fitting options with option to wear one or two earbuds. Advanced heart rate monitor. In-ear precision for optimized workouts and fitness analysis. Automatic rep counter and race pace predictor. Guaranteed durability. IP67-rated waterproof design, with 3-year warranty against sweat damage (Registration required via Jabra Sport Life App).