Super bright with no warm-up phase

immediately after power super bright light. The color temperature of 6500 Kelvin lets light subjectively appear even brighter than it already is.
This was a repeat purchase for the home office. In the stairwell I have 3 identical lamps since about 1.5 years in operation without problems. For dim romantic lighting certainly not ideal, but ideal for neutral strong (and frugal!) Illumination.