SPD FlipDot - Solar Reflex Sight w/KPM Mounting System (KeyMod/Picatinny/M-LOK)The reflex lens can folds flat against the optic body when not in use and the folding lens can be quickly deployed with the press of the ambidextrous side levers. The Solar cells are mounted on top of the reflex sight and will power the red dot whenever there is sufficient sun light on the solar cells. The red dot automatically turns on, when there is sufficient sun light. The SPD FlipDot can also be powered by the onboard CR2032 battery. The battery