Secure-fit Heartbeats Wireless Earbuds delivers balanced?? clean sound quality designed for heart pumping workouts</br>Monitor your heart rate?? running steps and calories burned</br>Track and evaluate your progress with the Navigator Sport App?? compatible with most Android and iOS device</br>Connect quickly with Bluetooth 4.1 Technology and effortlessly manage audio playback and calls with built-in volume controls?? multifunction button?? and microphone</br>Package Contents: AUKEY EP-B30 Heartbeats Wireless Earbuds?? Micro-USB Cable (30cm)?? Three Sets of Earbuds (S?? M?? L)?? User Manual?? 24 Month Warranty Card</br></br>Product Description</br></br><b>Fitness Tracker</b><br> Monitor your heart rate?? calories burned?? and running steps with the built-in heart rate sensor and step recorder. Download the Navigator Sport Fitness App on Google Play or Apple App Store. <br><br> <b>Bluetooth 4.1?</b><br> Experience the latest in Bluetooth audio with A2DP?? improved connection stabi"iring?? lower latency?? and more efficient power consumption from connected devices (like your phone) when wirelessly streaming audio. Wireless range is up to 33ft.?<br><br> <b>Great Sound?? Comfortable Fit</b>?<br> With a secure lightweight fit?? the EP-B30 Heartbeats Wireless Earbuds will make you feel like there's nothing between you and your music. Free yo