1)Material: Alloy with anti-oxidation plated   fits any 20mm rail <br />2) Magnification:1X  <br />3) lluminated type:<br />10 brightness level red dot sight for each color reticle to provide maximum flexibility in different light conditions ， <br />4)Battery:1*CR123(excluded for shipping)<br />5) Reticle:red&green red   dot， 10 Levels Brightness for each color， default reticle:  tri-dot，if you need other reticle， tell me please when you place the order.<br />6)Package includes: wrench ， Cleaning cloth， <br />7)Package Weight: 400g                                                                        <br />8)Package Size: 11cm x9cm x8cm                      <br />8)Color:Black          <br />short press to power on and two second press to power off:<br />rotates the knob to adjust the brightness of the dot