Achieve faster target acquisition with the new easy-to-see Green reticle that is approximately 6X easier to see than red in daytime. The EXPS2-GRN also maximizes rail space with its compact size and allows for co-witnessing of iron sights. It has convenient side buttons to add a magnifier and features an adjustable, locking, quick-detach lever for easy attachment and removal. Features : Quick-detach lever fits both 1" Weaver and MIL-STD-1913 rail Battery life of 600 continuous hours at nominal setting 12 at room temp