Sennheiser MOMENTUM Sport Overview The black MOMENTUM Sport earbuds feature easy Bluetooth integration with most leading sport products, including sports watches, apps, and fitness equipment. With three MEMS microphones per earbud and beamforming support, MOMENTUM Sport always keeps you in touch, delivering crystal-clear speech in even the noisiest environments. The earbuds offer a secure fit for rigorous activity, and they include several sets of interchangeable eartips and earfins for any ear size. The MOMENTUM Sport also includes a wireless charging case. Sennheiser MOMENTUM Sport Sound Despite their compact size and sports-oriented design, MOMENTUM Sport provides signature Sennheiser sound quality via the 10mm TrueResponse dynamic drivers. Energize your athletic performance with high-fidelity sound and impactful bass response. All-Day Operation The MOMENTUM Sport earbuds offer up to 5.5 hours of nonstop wireless playback each. With the wireless charging case, you can get up to 24 hours of playback. The wireless charging case supports both Qi charging and USB-C charging, with USB opening up to the option for a 10-minute fast charge that nets you up to 45 minutes of play in a pinch. Sennheiser + Polar = Advanced Fitness Tracking Sennheiser partners with Polar to supercharge MOMENTUM Sport with Powered by Polar technology, so you get precise in-ear heart rate and body temperature measurements without having to use a separate heart rate monitor strap or any device around your wrist. The sensors are integrated right into your earbuds. You enjoy truly moving sound with the clarity and impact you expect from legendary headphone maker Sennheiser. And with Polar’s decades atop the athletic wearables space, you’re also getting extremely advanced fitness tracking and analytics. Just connect to any smart device over Bluetooth, and your earbuds will integrate seamlessly with the Polar Flow app to bring your fitness and training data clearly into view.