The Viridian REACTOR R5 Gen 2 green laser sighting system. Viridian’s green laser utilize a 510-532nm wavelength range creating a optimum target dot that is up to 50 times brighter than red lasers. Includes an INSTANT-ON ambidextrous, inside the waistband (IWB), custom fit holster with automatic laser activation the moment you draw. No buttons, no squeezing, no doubt. When you draw, it’s on. Specifications: – Fits: Glock 17/22 & 19/23 – Activation: ECR INSTANT-ON – Adjustable: Windage/Elevation – Application: Conceal and Carry, Law Enforcement, Military, Self-defense – Battery Life (constant): 3 Hours – Battery Life (strobe): 5 Hours – Battery Type: 1/3 n – Color: Black – Holster Combo Pack Available: No – Holster Included: Yes – Laser Color: Green – Long Gun Specific: No – Lumens (constant): N/A – Lumens (strobe): N/A – Material: High Strength Thermo Molded Polymer – Mounting: Trigger Guard – Optics: Laser Only – Radiance Combat Optics: No – Range: Up to 100 yards daylight / 2 miles nigh – Strobing Effect: Yes Fits: Glock 17/22 & 19/23 Activation: ECR INSTANT-ON Adjustable: Wind age/Elevation unisex-adult High Strength Thermo Molded Polymer.