KEY FEATURES– Unrivaled Sennheiser Sound: Energize your performance with high-quality MOMENTUM SportSound with more impactful bass.– Adaptive ANC: Stay in the zone without distractions even in noisy gyms or busy outdoor spaces.– Integrated performance tracking sensors: Accurately measure your heart rate and BodyTemperature (BT) from precise in-ear sensors.– Sport’s ecosystem connectivity: Compatible via Bluetooth with leading sports watches, apps,and fitness equipment.– Semi-open design for greater comfort: Acoustic relief channel allows airflow to improve wearingcomfort, reduce body-borne noise and improve natural awareness.– Powered by POLAR: Full Polar integration plus free access to Polar Flow for seamless trackingof your key metrics.– Secure, multi-sports fit: Interchangeable ear fins and ear tips allow for a secure custom fit withlasting comfort over long-wearing sessions.