Vi Sport Headphones is everything an athlete needs for a fun and successful workout. Combing 4 gadgets in 1, Vi will track your activity, monitor heart rate and coach you, all while providing beautiful sound provided by Harmon Kardon technology. During your workout, Vi will give you insight on how your workout is going by speaking out your burnt calories, workout duration, hear rate, and distance. It will also suggest actions so you can get the most out of your workout, or slow you down if you’re pushing too hard. And if at any step, you want to know how you’re doing, just ask Vi “How am I doing?” to get feedback on your workout. The Vi headphones connect wirelessly to your smartphone and sync to the free Vi Fitness app where you can review your activity, set your goals and customize your Vi experience.