The X2 Series optics feature two improvements. First is the addition of Lock Mode. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Second, the buttons have been redesigned to compliment the Lock Mode by placing them lower and out of the way. Additional features include Holosun's Super Green LED with up to 50k hours battery life, and Shake Awake.
6 MOA Green Dot Reticle. Up to 50,000 Hours Battery Life (Setting 6). 12 Brightness Setting: 10 DL & 2 NV Compatible. Parallax-free & Unlimited Eye Relief.Holosun HE407K-GR X2 Green Reticle Red Dot Sight Specifications. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser". The seller is "shake278" and is located in this country: US. This item can be shipped to United States.