This is the new model, with all current improvements: Dual Side-Activation buttons Rubber Overmold construction Fully adjustable windage and elevation Master On/Off switch Three-year warranty
Fits Models: All metal-frame Ruger P-Series pistols, including P-85, 89, 90, 91, 93, 94 and 944.
Technical Specifications: 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.