Features:Model Number: M622V FlashlightLight Source: LED BulbsColor: Black / TanMaterial: 6061-T6 Aluminum,MIL-SPEC Type III Hard AnodizedDual Output: Constant White / Strobe / Momentary Flashlight (with tape switch)Battery type: 2 x CR123A 3V Or 16340 3.7V(not included)Bottom Mount: QD quick detach level mountFunction-Switch Table Function"WH"----Constant White Light"S"----Strobe LightTail Switch----Momentary LightNote:- the "S" sign switch is STROBE Light function only.- Momentary light is produced by tail switch.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 Weaver rails.Construction-High-strength aerospace aluminum with Mil-Spec anodizing; coated, tempered window.Remove the head, battery put from front side.Package includes:1 x M622V Light1 x Remote Pressure Switch1 x Wrench