The Axa Basta Riff LED light is a low cost permanently mounted rear light.
Mounted permanently at the back of your rear carrier, the Riff includes a reflector, and is water and shock resistant. The light has a choice of manual or automatic mode (where the light comes on automatically when the ambient light is low).
These lights are easy to install and can be used on either 50 mm or 80 mm bolt-distance mounting plates on rear carriers.
From the back, the light measures 10 cm wide and 4.5 cm tall. It is powered by two AAA alkaline cells, included with the light.