Sennheiser's Momentum Sport earbuds have a unique set of sport features in that it could measure your heart rate during workouts and transmit it to any Bluetooth capable device, while also measuring your body temperature. Here’s the Polar Flow app, which has everything from a workout recording to post-workout analytics, and more. So, let’s dive into it, if you’re looking for the most detail, you’ll see both the heart rate and body temp data. This is