Energizer Hard Case Tactical LED Helmet Light Compact and lightweight; 3" long, 1.5" wide, 3.5 ounces Light can be rotated in 18-degree increments and locked into place Mounts to either side of helmet with standard screwdriver Light easily detaches from helmet mount for use with other accessories such as MOLLE vest or Pickatinny system Four light modes; High Intensity White LED, Blue LED, Infared IR and IR Strobe (IFF) capability