Waste of money. I bought 5 pieces and all of them need a battery replacement, so it's not worth it at all. Some of them had leaked fluids inside (Each battery costs 10 euros, Samsung) and even if this Chinese battery works, it only lasts for 7-10 minutes

I bought it today in the medium light setting. When motion was detected, it turned on to full brightness for 13 seconds, then returned to medium light. After that, it no longer detects any motion and remains steadily on the medium brightness. It needs to be replaced