Thank you very much for pointing this out. According to the manufacturer, the protection class is noted as follows: because your headphones are protected against dust and sweat (protection class IP55). You can find more information here under the technical data: https://www.jabraheadsets.ch/supportpag...

(Hab mich in der Zeile beim Hersteller vertan...)
Die die Jabra Elite Active 75t haben die Schutzart IP57 bedeutet:
IP5X: Dust resistant. Some dust may get through, but it won’t be enough to damage the product.
IPX7: Can be submerged up to 1 meter in water for 30 minutes.