I would give this product four stars because it's really the only usable warning flasher. There are a lot of imitators. None of them has a decent battery that Gloria already. There are probably similar batteries as the Smoke Alarm. Unlike some cheap versions you can see the lights even in Brightness. The Gloria Blitzer is really waterproof (buoyancy I have not tried). One star I had to pull off for the button. He is very small and unobtrusive (in the dark on the road - -probably hard to find in stress). In addition, you have to press him extremely strong. I have small fingers, but I have to use the fingernail. That's the stress of an accident, unfavorable and impossible with gloves.
Otherwise, the device is really top. Also SOS is signaled at reasonable intervals!
