ezshoot green laser sight green dot 532nm scope with 20mm picatinny mount. ezshoot operation:<br> 1.attach the sight to your equipment.<br> 2.twist the two small screws located at the head of the sight with a small allen wrench to adjust the elevation and <br>windage. turn the screws until the main laser spot<br> 3.overlaps with the scattered points.<br> 4.press the button or switch to turn on the laser.<br> 5.open the back cover to replace the battery.<br><br> specifications:<br> power requirement: 1 x 3v cr123a battery<br> laser class: class iiia<br> output power: < 5mw<br> wave length:532nm<br> weight:410g<br> height:38mm<br> length:155mm<br> width:130mm<br> tube diameter:6mm<br> <br> package includes:<br> 1x laser sight scope with switches<br> 2x metal mounts<br> 1x hex wrench<br> 1x storage box<br><br><b> tips:</b><br> do not look directly at the laser.<br> do not point the laser at people.<br> do not point the laser at reflective surfaces.<br> do not look at the laser using instruments such as binoculars or microscopes.<br> children should not use the laser unless under the close supervision of an adult.<br>