Very cool engineering beam pattern design, nice performance even in foggy days. The laser source has a long range of up to at least 2 km and can be seen farther. The light color of the Laser source is bright and easy to control. Good directionality, low light dispersion, better concentrating, attracting people's attention as far as a few kilometers away. Easy installation, just plug & play. Faster on/off response time and vibration resistant. Environmental-friendly: energy saving, no UV and IR radiation, shock-proof and anti-corrosion. Beam type: Spot beam (30 degree). Please ...