Colour Temperature: It refers to how warm or cool the color is. Light warmth is measured in Kelvin; the lower the Kelvin rating, the redder the shades, and the higher the Kelvin rating, the bluer the shades.
CAN Bus: It monitors the consumption of the bulb and recognizes whether it is burnt out or not, sending indications to the dashboard. Consult your car manual for the minimum consumption required to avoid hitting the CAN Bus system.