The unmistakable sound of Sennheiser: The TrueResponse transducer system provides exceptional fidelity, as desired by artists, and ensures that every detail and emotion is captured. It delivers a high-end sound experience with powerful bass, refined with enhanced treble reproduction. Complete control over the sound: Choose between different ways to customise your sound: guided tests for personalised sound profiles, adaptive 5-band EQ, Sound Zones, Sound Check or preset modes. Future-proof technologies: Thanks to Auracast support and LE Audio, you're ready for the future and can use the latest codecs thanks to Bluetooth 5.4 compatibility. Lossless sound: Enables bit-for-bit transmission of audio data and ensures uncompromising sound quality for wireless listening. Adaptive Active Noise Cancellation (ANC): Automatically adjusts noise cancellation to the environment for an immersive listening experience. Transparency mode: Allows ambient noise to be heard without removing the headphones and ensures natural communication with the environment thanks to the low-noise microphones. Long battery life: Up to 7.5 hours of playtime, extendable to up to 30 hours with the charging box, as well as fast charging for one hour of playtime in just 10 minutes.