This Spectrum Series LED Solitaire features a green beam. Green is great for outdoors as animals, insects, and fish typically do not react to seeing a green led light source. Visually your eye responds better to green and blue color lighting. It protects your night vision and avoids eye strain typically associated with using white LEDs for an extended period. Great rescue light for both the professional rescuer and the average consumer; green LED flashlights can be seen up to a mile away.