... Have own patent of wake up light A031 Quality guarantee Natural sound wake up light function : light becomes stronger and ... light is on; go-to-sleep light trns itself down until it is off as set in advance3) Perpetual ... off (sun set): light can be set to turn down from now on or in 15 minutes, 30 minutes, ... is visible and the minute says 0, Press up or down to choose between 0 (off), 15, 30, 45, 60 ...