The integrated heart rate monitor is compatible with almost every major fitness app.
Brad's Deals Editor Michael,
These SMS Audio BioSport Smart Earbuds with Integrated Heart Monitors that are regularly $19.99, drop to $9.99 at TechRabbit. Plus the shipping is free. This is the best price we could find for these headphones by $6. They're IPX4 rated for water and sweat resistance and have built-in heart rate monitors that are compatible with most major fitness apps. There is no sales tax (except NJ).