I purchased 3 lighting units in July 2021.  In January of 2022 one of the unit's 4 lights started flickering on 1 of the units.  In February 2022 that light stopped working completely and a second light on the same unit started to flicker.   Then in March a second unit's lights started to flicker.  Now I have constant flickering of 2 of the 3 units purchased.  Not happy.  I am not sure how this product is getting 4+ stars.  UGH.