4300K Colour temperature. The lower the colour temperature number means the more yellow the light beam will appear. 4300K is closer to the colour of a Halogen light beam, and 6000K is closer to a pure white colour.
Bulbs are available in different wattages, you must choose the bulb that matches the internal ballast of your spotlight.
For spotlights purchased Post-August 2018 (easy adjustable focus models).
