I have tried LED spheres from several suppliers. They probably work best, but there are still quality issues. I have bought 6 balls and have used 4 so far, one of them died within 15m of the first use. It worked and then just stopped. The bounce rate is too high to recommend. This can be an isolated case. I will update the review in the future to let you know how the rest went and if I get a response from the supplier.
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