NcStar VDBSOLC SPD Solar Combat Red Dot Reflex Optic Black Anodized 1 x 24.5 mm 4 MOA Red DotThe SPD Solar Powered Combat Red Dot optic is a compact red dot packed with many desirable features. The small tube optic includes these features: dual power source from solar cells to power the red dot reticle from the Sun or a single AAA battery, electronic control panel, and our Patented Switch Cover that rotates and folds flat against the optic body with a push of a button. Includes a low rail mount and a high quick release rail mount for mounting