The warning is liner, brighter and meets warning requirements. The STT ones are are 5mm LEDs, the housing is full of the tiny little LEDs like how warning lights used to be when they first came out with LEDs. They are only visible when looking at them directly head on. It’s like ones on back of semi trailers and stuff. They are not designed for warning but meet the requirements for output for a motor vehicle. That’s why you can see the ones mounted at the top a lot better than the ones mounted as the brakes, even though they are both red. I did notice though that it didn’t look like the round lights were doing anything except flashing. They didn’t come on with brakes or turn signals. Even when the brakes were applied they were still flashing.