LG-105 Pink laser sights for the wildly popular Smith & Wesson J-Frame revolver line feature a hard polymer surface that is rugged and well suited for personal defense. The smooth feel of the polymer provides for a prompt, snag-free draw. LG-105 Lasergrips includes the durability, sighting adjustments, and the defensive advantage that Crimson Trace is famous for. Features:Material: Polymer Attachment: Grip Replacement Activation Location: Front Activation Sighting: Factory Sighted at 50' Batteries For Life: Yes Battery Type: Two #2032 Batteries Laser Battery Life: Over Four Hours Laser Output: 5mW Red Laser Activation Mode: Pressure Activated Laser Visibility: Aproximately .5 Inch Diameter at 50 Feet Wrench Size: 0.028 User Adjustable Windage and Elevation Finish: Polymer Grip with Rubber Overmold Activation Pad Installation: User Installed Dot Size: Approx. 0.50" at 50'