Your day-to-day may change, but your enjoyment of superior soundwon’t. Powered by Sennheiser’s leading audio technology, the CX 400BT True Wireless gives you total control over an exceptional sound experience. With intuitive customizable controls, long-lasting battery life and a design made for all-day comfort, they are the ideal, uncompromising choice for people that arepassionate about great sound.Immerse yourself in amazing sound quality thanks to Sennheiser’s unique 7mm dynamic audio drivers and personalize your audio experience with the built-in equalizer and the Sennheiser Smart Control app.Manage your music, make calls or trigger the voice assistant withcustomizable touch-sensitive technology built into both earbuds. Enjoy outstanding sound quality no matter your mobile device with a wide range of audio codec support, including AAC, aptX and SBC.Experience non-stop play time with a 20 hours of battery life – 7 hours on a single charge and a further 13 hours via the charging case. Dive into your favorite music for as long as you like with an ergonomic design made for all-day wearing.