When dot measuring work is processing at close distance, it is not easy to reach with a simple red laser pointer, however, it makes even better job with a 5mW red laser diode module. It is projecting formal brightness red laser light directly from a 650nm red laser diode. Among all visible laser devices, it gets formal brightness red laser light. Owing to its long developing history and mature laser diode tech, this finished production of red dot laser assures quite low price and highly reliable red dot alignment in long lasting use. Any time this compact size tube made red laser makes proper installation and adjustment of both laser beam focus and red dot projecting direction, within freely installed distance of 3 meters, this low power red laser makes high precision and long lasting dot alignment for close distance, inner room occasion.