I have been using red dot sights for over 20 years, professionally and on all of my turkey guns. EoTech at work, a FFII and a SpeedDot on my two 12ga guns. Just recently purchased the Romeo 5 to put on my new 20ga. One main selling point on the sight is you turn it on, and after 2 minutes of inactivity it shuts down, preserving battery life. But once you move the gun, it automatically turns back on.