The tail lights and brake lights are formed by two LED modules consisting of 15 LEDs each. A thick-walled optical lens combined with a recessed and a protruded semi-transparent mirror implements what Hella calls a 3D tunnel optical module: If the light from the LEDs hits the protruded semi-transparent mirror, it is partially reflected to the outside. The remaining light is directed to the recessed semi-transparent mirror reflected again. This creates an impression of a three-dimensional tunnel effect though the tail light assembly only features a rather slim design.
The further signal functions of the tail light assembly are implemented in conventional lighting technology. The basic version is also available as a purely incandescent version.