Tactical Picatinny Flashlights,Long Rifle Weapon Light with Remote Pressure Switch Feature: - A lock design is applied on the light-mode-alternate ring on the head. When Changing the light mode, push the ring forward to unlock it. Then turn it to the right mode you need and release your hand. it will lock automaticlly. - When you want to use the tail switch, turn off the rear push button switch off firstly. - High-performance LED is regulated to maximize tactical-level output and runtime per set of batteries. - Switches: Momentary-on tape , constant-on push button. - Mounting system—Integral thumbscrew clamp for Picatinny rails. - Construction—High-strength aerospace aluminum with Mil-Spec anodizing; coated, tempered window. - Remove the head, battery put from front side. Function: ▲White Light ▲Constant Light ▲Momentary(with Tail Switch) Specifics: Max Output : White light 400 lumens Tactical Runtime: 1.5 hours Batteries type: 2 * 3V CR123A (Not Included) Material: Hard Anodizing Aluminum Weight: 7.05 ounces(200g) Length: 3.62 inches(126mm) Bazel Diameter: 0.98 inches(25mm) Emitter Type: CREE R5 Rail Type:Integrated 20mm Weaver rail Package: 1 X Flashlight 1 X Tape Switch 1 X Push Button Switch 1 X Magic Tape