Price Match Guarantee Sennheiser Momentum Sport Earbuds with Fitness Tracker for Heart Rate and Body Temperature with Adaptive ANC The Sennheiser Momentum Sport Earbuds with Fitness Tracker for Heart Rate and Body Temperature and Adaptive ANC offer elite performance for your training. Equipped with cutting-edge technology, including in-ear heart rate and body temperature measurements powered by Polar and laboratory-tested by Cosinus GmbH at the Technical University of Munich, these earbuds provi