Sennheiser CX True Wireless — Bluetooth In‑Ear Headphones (7mm TrueResponse, AAC/aptX/SBC), Bass Boost, Customizable Touch Controls, IPX4, Passive Noise Cancellation, 27‑Hour Battery — Black

High-fidelity audio from German-made 7mm TrueResponse transducers with broad codec support (AAC, aptX, SBC) delivers clear music and call quality. Bass Boost enhances low-end impact while customizable touch controls let you tailor playback and call handling. The lightweight, ergonomic earbuds include four ear adapter sizes for a secure fit and effective passive noise cancellation. Product Note: If the ear tip size doesn’t match your ear canal or the earbuds aren’t seated correctly, you may not experience the intended sound characteristics or call performance. Enjoy up to 27 hours of listening time thanks to on-the-go charging with the included high-quality charging case. Full digital control is provided via the Smart Control App for iOS and Android, enabling smooth pairing and personalized settings for music, calls and voice assistant functions.