Love this ball light. Totally addictive, I’m now up to 12 total. I recently added the newest edition that includes optional USB charging and what a difference in brightness! Another thing I like is within a few days of charge the lights sometimes last for the entire night. I am hooked! I display my lights on the pool wall above the waterfall, not in the pool. Love the ambiance! Beautiful and colorful nightly attraction. Will most likely purchase additional balls.