LP175S 5mW green laser， is ready to work for your purpose. Green laser pointers are brighter (about 60 times) than red laser pointers. Human eye is more sensitive to green color and this laser pointer is much more noticeable than other light colors. Use your laser pointer to point at any desigreen targets on projection screens， video monitors， presentation graphics and more. A best suitable kit for astronomers， professors， teachers， doctors， student presentations and etc. 5mW fat beam laser complies with IEC Safety Standards. Light source: 532nm/5mW green laser module. Powegreen by two AAA batteries (Batteries included). Low consumption.   Package Details Weight: 164.78 g Size: 17.5*6.5*2.5 cm Package Includes 1 × 5mW 532nm Green Laser Pointer 2 × AAA Battery