The Coast TX10 has four colors, white, red, green and blue - each controlled by a separate switch. White light is ideal for all-purpose illumination and provides perfect color distinction and clarity. Red is best when you only need a little bit of light - it preserves night vision. Green preserves night vision but with adequate color distinction, which allows hunters to move about at night or read maps without scaring off game. The blue preserves night vision and can cut through fog. A lightweight aluminum casing offers great durability and will hold up to heavy daily use.