Number in set
Number of lamps included in delivery.
The headlight lamps (see “Purpose”) are paired and can be supplied either
one or
two at a time - the latter is ideal if you need to install or replace both lamps at once. Also, paired configurations can be found in models for auxiliary lighting, and sometimes such lamps are supplied in
sets of 10 or even 100 pieces - this can be useful, for example, for installing side lights on a bus or truck. But the dashboard lamps are sold exclusively one at a time.
Increased brightness
The level of increased brightness provided by the lamp. This indicator is used by some manufacturers for marketing purposes: it describes how brighter a given model is than some "standard lamps". At the same time, the standards for comparison may be different, and impressive figures (in some models reaching 140%, that is, almost 2.5 times) are not always reliable — that is, a high-brightness lamp will not necessarily be just that much brighter than the “normal” model of the same type and power.
Light colour
Standard lamp glow color.
It is worth considering that in this case we do not mean the own shade produced by the lamp (see “Color temperature”), but the light that will be produced “ultimately” during normal use of the lamp. For example, in auxiliary models (see “Purpose”) intended for brake lights, the glow color is usually indicated as
red - this is the standard color for “stops”. In this case, the lamp itself can have a color temperature of about 4000 K (neutral white). Similarly, models used in fog lights can be yellow, in turn signals - also
orange, etc.
If we talk about the head light, then it is most often made white, and in such models the shade can be determined by the color temperature (see above). If the characteristics of the “head” lamp indicate a different color, this most likely means that it has a painted bulb, and the light produced by the headlights will have the same shade. Note that we are talking specifically about shade, and not about full-fledged light: for example, purple lamps will illuminate the environment with white light with a slight bias towards cool colors. At the same time, such lamps themselves will look purple. Such features are useful primarily for external car tuning.
