About this item Flexible Earhook Design For Sport: Comfort and secure fit with lightweight and ergonomic design, super stability with earhook, in-ear fitting tips and headband, great for running, jogging, hiking, biking, gym, workout outdoors or at home. Powerful Bass Stereo Sound: Upgraded Bluetooth earbuds with 11mm dynamic drivers and clear calls technology, these earbuds deliver superior sound quality, powerful bass, and crystal-clear phone calls. Enjoy your music and conversations with unmatched clarity. Up To 16 Hours Playtime: With an improved polymer lithium battery, these sports headphones offer up to 16 hours of playtime. Enjoy a superior audio experience with extended endurance, allowing you to immerse yourself in your favorite music or engage in important conversations without interruption. It is recommended to use the supplied USB C cable for faster charging. Other cables are not recommended. One Step And Auto Pair: Running headphones equipped with the latest Bluetooth 5.3