GU4

This is the colour of which the device is mainly composed.

The type of light indicates the effect of the light source.

This is the fitting of the lamp that fits into the device.

Indicates the light colour of a light source. It is expressed in Kelvin. The higher the value the whiter the light. The lower the value, the yellower the light.

Colour Rendering Index indicates how correctly a light source reproduces the colours it shines on. The higher the CRI, the more correctly the colours are rendered under the light source.

This is the angle from which the light falls starting from the light source.

The total amount of visible light emitted by a light source.

IP stands for "International Potection. The first digit indicates dust density. The second indicates water density. However, if a third digit is included, it refers to the impact resistance or 'I K' value.

With a dimmable lighting fixture, you can control the intensity of the light. Usually this is with an external, NOT included dimmer. When in doubt, inquire.