Milestone is a Japanese outdoor headlamp manufacturer. Milestone headlamps feature a "natural warm color" of light bulbs. The warm light is easy on the eyes, and is effective in dense fog with little diffuse reflection.
The yellow bulb-colored light sources used in car fog lamps (fog lamps) and tunnels are said to cause less diffuse reflection and allow light to reach farther than white light. This bulb-colored light is also excellent for making one's presence known in foggy or rainy weather. Lanterns, which have been used as lamps since ancient times, have a unique yellow light that creates an ambience and a more natural light than fluorescent lamps.
This is why Milestone uses natural warm color LEDs (light bulb color) for its main LEDs.