The LG-111 Defender Series Lasergrips for the Ruger SP-101 feature a hard polymer surface that's both rugged, and well suited for personal defense. The smooth polymer material provides for snag-free draws, and is hard enough to meet our strict standards for durability and reliability. (Grips/Laser only, gun not included). Specifications: - Activation: Instinctive Activation; Front - Material: Hard Polymer - 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 - Fits: Ruger SP-101 Manufactures Website Address www.crimsontrace.com Warranty Information