Viridian's E SERIES laser sight is specifically designed for the everyday conceal and carry owner. This model specific, trigger guard mounted, laser sight offers the most powerful red laser legally available, delivering rapid target acquisition when you need it most. Easy installation onto the trigger guard of your pistol Ambidextrous on/off button with 5 min auto shut off 100 yard range in daylight and 1 mile at night Constant laser with 6 + hours battery life Easy windage and elevation adjustment Specifications: Viridian Accessory: E Series LED Light Color: White Weapon Brand: Walther Activation: On/Off Only Adjustable: Mounts Application: Conceal and Carry, Law Enforcement, Military, Self-defense Batt. Life (constant): 6 Hours Color: Black Holster Combo Pack Available: No Holster Included: No Laser Color: Green Material: High Strength Thermo Molded Polymer Mounting: Rail Optics: Laser Only Range: Up to 25 yards daylight / 1 mile night Strobing Effect: No Warranty Length: Lifetime Limited