Wanted to try some LEDs for cheap before going to an HID kit and I am pretty happy with these. Got both bulbs for $6 shipped. They are mainly for looks and as a daytime running lamp since I don't ride at night.
Nothing on the back. They are a direct replacement bulb that plug into the oem socket. I will try to get some night pictures. From what I understand, the LED bulbs are more for looks because they dont project a crisp beam but rather flood the light.