Sennheiser CX True Wireless Earbuds – 27h Battery, Passive Noise Cancellation, IPX4, Touch Controls

Immersive, flexible listening wherever life takes you

The CX True Wireless earphones bring Sennheiser’s signature sound into a compact, wire-free design. Equipped with 7mm TrueResponse drivers and support for AAC, aptX, and SBC codecs, they deliver balanced clarity across highs, mids, and bass for everyday listening.

Power that keeps pace with your day: up to 9 hours of playback from a single charge, plus an on-the-go charging case that adds up to 18 more hours. In total, you can enjoy as much as 27 hours of listening between charges, whether you’re commuting, working out, or unwinding at home.

The buds are designed for quiet focus with a secure, ergonomic fit and four ear tip sizes, enabling effective passive noise isolation so music, podcasts, and conversations stay clear in busy environments.

On-the-fly control and customization are simple thanks to the Smart Control App for iOS/Android. You can tailor earbud actions, switch between sound profiles, and activate Bass Boost or the built-in EQ to suit your taste, all without interrupting your flow.

Durability for everyday life comes through IPX4 splash resistance, making them suitable for workouts and outdoor use. A compact charging case complements the lightweight design, supporting travel and daily carry with ease.

Key benefits at a glance

• Clear, balanced sound powered by 7mm drivers and multiple codecs (AAC, aptX, SBC)
• Long-lasting battery: up to 27 hours total with the charging case
• Passive noise isolation from a secure, ergonomic fit with multiple ear tips
• Personalized controls and sound via the Smart Control App and Bass Boost/EQ
• IPX4 splash resistance for everyday wear and workouts

Real-world scenarios

• Morning commute with clear calls and steady playback
• Gym sessions or outdoor runs with sweat- and splash-resistance
• Remote meetings or podcasts with focused listening and easy voice access
• Travel and daily errands with a portable, user-friendly charging case

Overall, these earbuds offer a practical mix of sound quality, battery life, and customization that can adapt to many listening moments without promising guaranteed results. They’re designed to be a reliable companion for music, calls, and content on the go.