The CX Plus True Wireless exceeds all sound expectations with noise cancelling, effortless smart controls, and a sleek design for maximum comfort. Independent use of earbuds: This practical feature allows for the use of the left and right earbuds individually or as a pair. The dynamic 7mm TrueResponse transducers, produced in Germany, deliver Sennheiser's signature sound quality. With a playback time of 8 hours and a total battery life of up to 24 hours via the charging case, the CX True Wireless provides an audio experience for the entire day and in any environment, thanks to passive noise isolation and an ergonomic design for a secure fit in the ear. Bass Boost: Enhanced bass can be activated with a special EQ preset through the Smart Control app.