MOMENTUM True Wireless 4 is the 4th generation of MOMENTUM True Wireless. Immerse yourself in exceptional sound: Sennheiser\'s TrueResponse transducer system and lossless audio technology deliver best-in-class audio quality for an exceptionally detailed listening experience Embrace the future: Stay ahead with LE Audio & Auracast* that are revolutionizing audio streaming, as well as with smart features like customizable touch control and multipoint connectivity *Only available with firmware update Reclaim control of the sound around you: Isolate outside noise with optimized adaptive ANC and Anti-Wind Mode, and easily switch to low-noise Transparency Mode for comfortable awareness Designed for all-day comfort: With a secure fit and extra soft silicone ear tips, you can enjoy long listening sessions Never slow down: Enjoy up to 30 hours of uninterrupted listening pleasure and quick charge for an hour\'s play time in as little as 8 minutes