Aquarius Audio Bio Sport Earbud with Heart MonitorFeel the Music - Professionally tuned 12mm drivers deliver crisp vocals, tight bass, and dynamic mid-tones. This is studio-mastered sound on the go.Lose the Strap - Now you can track your heart rate while listening to your favourite tracks without an uncomfortable strap or multiple devices.Dive In - SMS Audio BioSport Earbuds are IPX4 rated for resistance to sweat and water.Throw out the Batteries - The 3.5 mm gold-plated audio jack delivers all the power you'll ever need for biometric monitoring. There is nothing to replace or recharge.Track Results - SMS Audio BioSport Earbuds are compatible with major fitness apps, so you can stay in shape and on track. Such as Run KeeperPackage Includes: Aquarius Audio Earbuds with Heart Monitor