If all-day listening is what you’re looking for, the Sennheiser CX 400BT true wireless earbuds deliver. With seven hours of battery life on their own, these Sennheiser earbuds last up to 20 hours with the included charging case. The battery life is great, but it’s not all these have to offer. With bespoke drivers and customizable controls, these true wireless earbuds provide an intuitive, high-quality listening experience. What’s more, the ergonomic design makes the Sennheiser CX 400BT comfortable to wear throughout the day. And you can choose between black or white color options–both of which provide a sleek look. Communicating over Bluetooth 5.1, these offer high-quality AAC and aptX codecs. Providing high-end acoustic technology not often seen in truly wireless earbuds, the CX 400BT truly prioritize sound above all else.