Regarding the green laser pointer is a light usb laser pointer, the beam can be focused and burned. Also because the light is bright and the light is very clear, astronomers like to use a green laser pointer to point at fixed stars and constellations. The red laser pointer, too, more people know. The low-power red laser is usually used for teaching projection, business meetings and so on. Because the red dots are warm and not very bright. This red laser pointer is made of high-quality stainless steel and is durable. Lightweight and convenient design, very convenient to put in a bag or pocket. In addition, this red laser pointer is also the best gift for family and friends. The silver body makes the laser light at night vivid and unique.
In addition, many people may face the question: How can the star pen be used properly during the day, and how can it be "out of power" at night? Means that the medium produced by the star-shaped spring is a semiconductor laser. The various characteristics of the semiconductor are very sensitive to temperature. At lower temperatures, the usb laser pointer pointer will not work, and then just hand over the laser pointer for a while and let the temperature rise above 20 The pen will be able to work normally, if not, it may be in terms of battery replacement.