Very bright LEDs. Did the job on my dock. Not sure how long they last before I have to get new recharge batteries but they are sealed and will have to cut them out. Guess better off water tight than not.
These were replacement lights for the ones on our driveway. We are constantly moving them around on our driveway because not all parks get equal amounts of sunlight to charge the solar panels. Even when it snow once we dig them out they will light up if it gets sunlight.
If you drill into concrete and hope to use the screws in the previously drilled screw holes then try to use the nuts_ood luck!!!! One already burned out and the brightness is so so.
I use these lights to light my dock. They are bright enough to help locate the dock from the boat coming into shore, but not so bright that they are annoying to others trying to enjoy a nice night on the water.VERY durable............
These lights were very sturdy and very bright, and this is my second purchase. Also very easy to install a number of different ways. I will say though that a couple of the ones I bought less than a year ago have stopped working which is disappointing.
pj 
