This is a specified designed product

Super-bright Cree LED flashlight with ZOOM IN and ZOOM OUT function; 
Three functions: Super bright light mode, normal bright light mode and flash lighting mode; 
Button push to turn on/off. 

Also designed to mount on certain hand pistols, rifles and shotguns with proper mounting equipment
SuperBright, blinding Effect
"O" ring sealed, Waterproof, can be used in rainy weather. 
Adjustable focus range for different usage
Zoom: X1
X250
X500
X1000
X2000
Suitable for Self Safety, hunting, cycling, climbing, camping and outdoor activity.