A good workout needs a slamming soundtrack. These Sennheiser Momentum Sport earbuds have an enhanced bass so you'll feel every beat of your perfectly-curated playlists. They've even got performance tracking sensors that measure your heart rate and body temperature so you know when to back off a bit. And Adaptive Hybrid active noise cancelling blocks out noise and automatically adjusts to the changing levels of hubbub around you. It means you can enjoy your music rather than the grunts of the person working out next to you.Good to know- You get up to 6 hours of playtime on a single charge with an extra 18 hours from the charging case- When you need to stay savvy to your surroundings, Transparency mode lets outside sounds in- The interchangeable ear fins mean they'll stay put no matter how intense the workout- They're compatible with a bunch of sports watches, apps and fitness equipment via Bluetooth- Their semi-open design improves airflow for better acoustic relief which means they're super comfortable- Keep on top of your key metrics like training and sleep with free access to POLAR Flow