Material: Comfortable Rubber Overmold. Activation: Instinctive Activation; Dual-Sided. User Adjustable: Both Windage and Elevation. Master On/Off Switch: Yes. Warranty: 3 Years Complete. Beam Intensity: 5mw peak, 633nm, class IIIa laser. Maximum output that federal law and technology allow. Dot Size: Approximately 0.5' diameter at 50 feet. Power Source: Two #2032 lithium batteries (included); over four hours of on-time use and a five year shelf life. Export of this product outside of the United States of America is not allowed and is controlled by the US Department of State