Viridian C5-R Universal Sub-Compact Red Laser Sight Class 3R Laser Product (Does not exceed Class IIIA emission limits),  5mW power output Construction - High strength Zytel polymer Laser Intensity - 5mW peak / 635nm Optimum wavelength Activation - Automatic activation w/ ECR and User-defined operating modes. Laser Range - Targeting up to 25 yards daylight, 1 mile at night