The red LED light is preferred by some for night vision because it often provides for a greater contrast. Red light is popular in military operations because it is difficult to pick up at a distance. This color is also often preferred by photographers and those using night vision scopes. Red is good for smoke or particulate-filled environments to avoid the refractory wash out. Red can be useful in night-time hunting applications. However, it does make it difficult to make out red lines or marks on maps and charts.

Squeeze to light or flip the switch on the side.