The battery life, wearing comfort and noise-cancelling of the Elite 7 Pro are excellent. And the app operation is among the best. So why do the Jabra earpieces only come in midfield? The simple reason: they fall behind in terms of sound. It's good, but inconspicuous.

The Bluetooth headphone test provides results for 240 headphones with and without earpieces. Which ones sound strong, have good batteries and no harmful substances. New in Stiftung Warentest's headphone comparison: 26 current in-ear and boom headphones. Among them are models from Apple, JBL, Samsung and Sennheiser...