Check the listing for details. WADSN PERST-4 Metal LASER RED GREEN Dot Aiming Pointer IR Laser Strobe Sight. Color: Black, Condition: New. Listed at 34.90 USD. New Airsoft Tactical P-4 Aiming Laser Sight Full Metal PEQ Red IR Strobe Laser Support Zero Target/ Brightness Adjustable P4 is used to point targets when observing ,inspecting and watching small arms shooting at night.This product is a small optical mechanical device that forms laser radiation flux.this product is installed on Picatinny rails.The KV-D2 Tactical swtich (in the kit)can be installed on picatinny rails and 1913 rails.P4 contains 2 laser functions:1.The triangular area on the host can switch between visible laser and IR2.On the top or side of the host ,the round switch is turned on.3.Turn on through the KV-5PU Wire Control Switch4.Press the swtich quickly to realize the strobe function5.Two small circular buttons on the main unit to adjuest the laser brightness6.The knob on the KV-5PU wire control can adjust the laser brightness* Control switch: use the aviation plug and socket provided by us. If we don't use the switch tail we provide, we cannot guarantee that other manufacturers' mice can achieve the same function.*Can it be equipped with dual controls: No, it can be equipped with the control switch we provide.* The operation instructions of the control switch are as follows:SMG key single press to light up, double click to light upThe knob is used to adjust the laser power, clockwise to increase the function, counterclockwise to decrease the powerThe two-way button on the side can be used to lock and unlock the function of the knob