Can switches instantly from 1x to 4x. Rails fitting: 20mm RIS/RAS rails. Battery: one pc CR1620 lithium (Not Included).The photos taken may be a little color difference. Thank you very much for your understanding! The item "Tactical Rifle Scope 1x-4x Fixed Dual Purpose Red illuminated Red Dot Sight" is in sale since Tuesday, March 5, 2019. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Rifle Scopes". The seller is "spina-optics" and is located in guangzhou. This item can be shipped worldwide.