The Viridian REACTOR RTL taclight includes an ECR Instant-On custom fit holster with automatic light activation the moment you draw. No buttons, no squeezing, no doubt. When you draw, it's on. Specifications Fits Glock 42 Activation ECR INSTANT-ON Adjustable Windage/Elevation Application Conceal and Carry, Law Enforcement, Military, Self-defense Battery Life constant 1 Hours Battery Life strobe 2 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 100 Lumens strobe 140 Material High Strength Thermo Molded Polymer Mounting Trigger Guard Optics LED Light Only Radiance Combat Optics Yes Range 25 yards Strobing Effect Yes SOLD QUANTITY 1