I bought these LEDs to replace a broken aquarium light. Only 40 out of 200 used. The first days was very satisfied. Very bright and easy to install. I noticed that some LEDs started dimming/flashing or going out after about 1 week. After about two weeks, everyone stopped working. They have never been in the water - always 4 cm taller, at room temperature and with a good power supply. Obviously, they're nowhere near waterproof. What's the point of giving a three year warranty if they can't even last a month? Make junk material and bring this junk out of China. I returned them. I wouldn't recommend it if you don't want to waste your money.