The exact size and type of batteries that ship from the factory with Uni-Max laser sights. Correct voltage to ensure the brightness, reliability, and longevity of your sight. Sold in 2- and 10-paks. DL1/3N - 3 volt lithium cell for the Green Uni-Max, two required.
AR-15, Issue:08, Page:085
Big Book Catalog, Issue:68, Page:407