Kabellose Kopförer on the Ear Wireless Bluetooth 5.3 Technology with JBL Pure Bass Sound Get the more practical JBL Headphones app. Fuller Bass, with more tags, is exercised and trained for 57 minutes (5 minutes = 3 minutes). The powerful JBL Pure Bass Sound is provided by the new 5.3 BT technology in the JBL Tune 520BT-Kopförer. Use it for three minutes until it lasts five minutes, and it will help you sleep for more than fifty-seven days after cleaning. You can use this Sprachansagen to enjoy the new Kopfhörers by installing the JBL Headphones App on your device and using the same Sound and EQ. The practical taste control allows you to adjust the sound, loudness, and horn. We are available to assist you; you can utilize this video to