The device comes with a price tag of 199 euros and will start selling from September 15. The earbuds will be available in Black and White colour options. The company claims that the earbuds are designed for casual listeners.

Available in white or black, the earbuds have a clean, elegant design. While they don’t look or feel as premium as the Momentum True Wireless II, they clearly rise above the level of a budget model. For instance, the case is pretty basic looking — it’s overall more compact than the Momentum True Wireless II’s case — but the hinge feels solid and the top of the case snaps shut with authority (an integrated magnet secures the lid) in place.

Sennheiser says the CX 400BT have a stylish and “minimalist” design, but looking at some of the press photos, it seems anything but that. The main earbuds seem to stick out quite a bit when you wear them and have a square design, compared to the circular design on the Momentum True Wireless 2. Each earbud features 7mm dynamic drivers. The audio signature of the earphones can be tweaked using the Sennheiser Smart Control app.

There are touch controls on the outer section of the CX 400BT that can be customised for calls, music playback, or accessing voice assistants. The earphone boasts of up to seven hours of battery life on one charge, and up to 20 hours in total when using the charging case.

Sennheiser’s HD 25 headphones were touted as being “capable of handling very high sound pressure levels” and though they didn’t come with any active noise cancellation technology, the company claims that they could block background noise passively.