The LG-207 LaserGrips feature a hard polymer snag-free grip surface and are shaped and sized like the stock Smith & Wesson grips. – Platform Lasergrips® – Material Polymer – Attachment Grip Replacement Activation Location Front Activation – Sighting Factory Sighted at 50′ – Master On/Off Switch Yes – Battery Type Two #2032 Batteries – Laser Battery Life Over Four Hours – Laser Output 5mW Red Laser – Activation Mode Pressure Activated – Laser Visibility Approx .5 Inch Diameter at 50 Feet – Wrench Size 0.028 – User Adjustable Windage and Elevation – Finish Polymer Grip – Installation User Installed – Warranty Three Year Full Warranty – Color Black – Dot Size Approx. 0.50 at 50′