We bought these lights for our above ground pool no matter what we tried the suction cups will not stick to the side of the pool they end up working their way off and floating in the pool instead of being stuck to the sides like we wanted.Pretty lights and patterns but battery doesn't last only a few hours and water seeped in the unit. It's NOT submersible. Too late for return. Would not recommend!Such high hopes but it wasn't to last. After 1 wonderful night, it stopped working the next day. Replaced batteries thinking it was a simple fix and I had bad batteries. Nope. Returning itLights are brighter.. but after 4 hours of use they were dim. After 8 hrs 2 wouldn’t stay on.Replaced all with new batteries. One won’t come back on. Another only half side of the lights work on it.. then it cuts off! Had to tighten screws straight of the box . (Used not even a week)2 of 4 are not working. Suction cup does not stick! Has 3 small weak magnets which causes them to pull away and only stick to 1 of the magnets. Used a couple hours at a time for 4days and then had to replace batteries! Very disappointed poor quality compared to other pool lights I’ve used in the past.