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
All metal-frame Ruger P-Series pistols, including P-85, 89, 90, 91, 93, 94 and 944.
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.