Specification :

Hurricane 552 Holo Sight

Hurricane's latest Holo-Sight the 552 is a beautiful full metal holographic sight that is a replica of the popular military EO-tech sight. This sight is digitally adjusted and can be set to either red of green sights. Operates just like the EOTECH sight. Press the UP button and the unit turns on. Press the UP and DOWN buttons to adjust intensity, or the middle W button to change between red and green holographic pattern. Press both buttons at the same time and the unit will turn off. Perfectly designed for the M4 - install this sight onto the flat-top rail of your M4 - your M4 / M16 front sight will NOT obstruct the holographic image since its located high enough to look over the top of the front sight. The 552 features an auto-adjustable brightness reticle, which automatically adjusts the brightness level by detecting the ambient light. This feature does not exist on the 551 model. Features include:
Red & Green dot color changeable (digitally).
20 level manual brightness adjustment.
Auto-brightness adjustment
Low power indicator.
2 hours auto shut down.
UV tempered lens.
Moisture Resistant design.
Battery: 2x AA batteries (not included)
Full metal construction