With the Nothing Ear Black, you can completely immerse yourself in your music or podcast. The earbuds strongly reduce ambient noise thanks to noise canceling. This way, you also won't hear your talking colleagues at a busy office. You can adjust your audio preferences in the Nothing X app. The app makes a scan of your ears and adjusts the equalizer accordingly, so you can listen to the music like the artist intended to. When you want to adjust the equalizer yourself, use the Nothing X app. The earbuds have an 8.5-hour battery life and the charging case a 40.5-hour battery life. That's 49 hours of music. If the battery still runs out, charge the earbuds for 10 minutes and get 10 hours of extra battery.