Dear , Thank you for contacting Harman Customer Support. We think it is great that you are interested in knowing more about our products. Unfortunately you cannot adjust the brightness of the display in this model. Should you have any other queries we are more than happy to assist. Kind regards, Alexander Customer Support EMEA Harman Lifestyle Division

Thank you for your question. Whenever the speaker is switched on and is in use the display should remain active. If for some reason the display switches off despite being in use, you can try to reset the Tuner XL by pressing these two buttons for 10 seconds; "Preset 1" and the Bluetooth button, while you speaker is switched on. After this, please remove the link in your phone's Bluetooth list, as the memory of the Tuner will have been emptied and a new link on your phone should be created. Worth noting: If you are outdoors in strong sunlight the screen might appear dimmer, as daylight is many times stronger than that of the Tuner display. With normal indoor lighting you should have no problems seeing the display. Should the above not answer your questions and you need further assistance, please contact our Harman Customer Support team by telephone, email or chat in order to receive further assistance. Please see https://no.harmanaudio.com/support-contact.html for more details. Thank you.