laser pointer pen with five heads

size : 15.8*1.4cm material : brass batteries : two AAA batteries surface treatment : painting wavelength : 532nm power :5mw-50mw distance : 500M-2000M working voltage :3v working temperature : +10°C +40°C Storage temperature :+10°C +40°C Structure: laser tube + crystal + lens groups package : gray soft gift box 17.5*6.5*3cm carton : 36*35*35cm 100pcs/carton Instruction : green laser pen with five heads ,every head can show a diffierent images and when you slide the heads ,the images can change diffierent shapes automatically .Remove out the heads ,it can show green single dot and can point at the far-distance goals widely used in the following crowd : 1. teacher /instructor : used in class teaching. it is like a Unlimited extension pointer .wherever you are in the classroom ,you can point to the blackboard easily .It is really the right and best assistant for teachers . 2.business people /Conference keynote speaker for product demonstration and conference interpretation, let your communicationwith customerst more relaxed and natural. 3.Stargazers used in astronomy to point at the stars .Green laser pointer shoots out a beautiful green line . It is suitable for night sky ,it can point out the specific location of the star accurately. 4.outdoor travelers/climbers/adventurers for the outdoor adventure point to the long distant goals,send out a distress signal,let your travel happier and more interesting . 5.Museum/gallery/guide used to point at the long distant goals it can help youpoint out thegoals easily and accurately 6.The military command or exercise 7.miners /construction workers point to long distant goals accuately and can avoid dangerous area 8. can use in emergency like earthquake ,flood ,fire . package : gift box (17.5*6.5*3cm) carton size : 36*35*35cm (100pcs )