900Miles 1mw Green Laser Pointer Pen 532nm Lazer Beam Light Water Resistant

Instruction100% brand new high quality and perfect design.Actual photo shown,Simple and easy to use.Use your laser pointer to point at any desired targets on projection screen, video.Across the sky,allowing you to find the stars in the fan days you want the stars,is the leader in the vast sky.Power saving, lightweight, suitable for putting in your pocket or handbags.This laser pointer can be used for presentation, teaching indicator, children amusement and more.This high quality laser pointer adopts the latest technology optics and microelectronics. How to use1.This laser pen is not included battery and charger.2.Install yourself battery into the laser. Put the negative pole (cathode) into the laser first, that means leave the positive pole (anode) touching the end cap.3.Install the end cap. Use the key to make sure it points to green.4.After installing the battery and end cap correctly, press the power button to turn the laser on. Be aware of that you need to keep pressing the button