Advertised as 5 lumen is not at all correct.  Maybe  .5 would be closer.  These lights are extremely dim.  You can see just a glint of light.  Definitely not bright enough to light a pathway.  Glad I bought three sets.  At least I'll be able to follow the lights from one to another since they are only about 6 ft. apart.  Not what I expected from Wayfair.