focusing function allows users to simply adjust the degree of focusing of the beam as need to meet different distance requirements The head from coppered cmponent with good heat conductivity and durability, ensuring stable output The small structure with outer diameter of only 6mm is easy to integrate and install, suitable for a variety of projects and in equipment with limited space Two operating voltages of 3V and 5V optional, so you can choose the right power supply configuration according to your specific needs enhances compatibility Provides clear and bright red dot, suitable for positioning, alignment, ranging and other application scenario