... are 4 colors changing (Blue, Green, Red and Yellow) individually or interchangeable. Turn it ... lead you to go to sleep Four colors : red, blue, green, and yellow"Manual" key--show ... 6 color mode: Blue, Yellow, Green, Red, Blue & yellow, Red& green"Auto" key--4 colors display alternately'' ... shut-off — 60 minute sleep timer, Just push button reactivating, easy color selection Size:approx.35*23*12 ...