Astronaut: Life as a Scientist and Engineer in Space 2016

The type of illumination used by the product, such as LED, halogen, incandescent or other light‑emitting technologies. It indicates whether the device uses a single light source or multiple sources and helps users understand the lighting characteristics of the item.

The total amount of space that a product occupies or can hold, expressed as a volume measurement such as liters, milliliters, cubic centimeters, or other standard units. It represents the capacity or physical size in three dimensions and is used for items like containers, appliances, or any object where capacity matters.