The Viridian REACTOR R5 green laser sighting systems include an ECR Instant-On custom fit holster with automatic laser activation the moment you draw. No buttons, no squeezing, no doubt. When you draw, it's on. Activation: ECR INSTANT-ON Adjustable: Windage/Elevation Application: Conceal and Carry, Law Enforcement, Military, Self-defense Batt. Life (constant): 1 Hour Batt. Life (strobe): 2 Hours Battery Type: 1/3 n Color: N/A 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: 2 miles Strobing Effect: Yes Warranty Length: 7 years