Sennheiser CX Plus True Wireless Earphones - BlackTake control of your audio experience with the customizable CX Plus Noise Canceling True Wireless In Ear Headphones from Sennheiser. Using dynamic 7mm TrueResponse drivers, the CX Plus earbuds are made to deliver rich audio and deep bass, which can be fine tuned with a built in equalizer by using the Sennheiser Smart Control app. When listening in public, use active noise cancellation to isolate yourself from distracting ambient noise, but if you need