It's like most rangefinders, one click turns it on & the 2nd click gives the reading! The Vortex 1000 had 3 clicks. One to turn on & 2 to range. I got used to it fairly quick, I hit the button when I grabbed for it & then the 2 clicks afterward. I like 2 clicks better than 3 but it still worked out fine. No problem staying on target at all.
ElkNut1
ElkNut1