green laser pen xw-101

material : brass unique design ,delicate ,elegant and graceful Output power:5mw,10mw,20mw,30mw,40mw,50mw Wave length:532nm Range in darkness: up to 200-300 feet with AAA batteries *2 Output mode: constant wave Dimension: Appox. 13*158mm Surface Color: black The green laser pens can show bright green laser beam and can point at far -distance goals .It is popular in stargazing , multimedia teaching ,climbing ,travelling and other activity 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 .