Features:Simply push the button then you can see the striking green beam of light shoot forthIt will be used to point at any desired targets on projection screens，video monitors， and presentation graphicsAlso can be used for forensics， illumination， indicating， alignment，sky pointing (astronomy) or just being coolOutput Type: Fixed focus， continuous output and working time of over 5，000 hoursBest choice for teachers， professors， doctors， Presentation， Tutorial， and Office Meeting and so on.Clearly visible in the dark.Specification:Color: GreenPower: 2 x AAA Batteries (NOT INCLUDED)Packing content:1 x laser pointer