1IR Led serves as a personal Identify Friend or Foe (IFF) beacon. 2The white LEDs are perfect for general-purpose, close-work illumination; the red LEDs serve the same purpose in a low-signature. 3Helmet Light has O-ring sealed, watertight body. 4Attaches to any Integrated Communications Helmet (MICH). 5Helmet Light can be quickly and easily slid on and locked securely.Features: IR Led serves as a personal Identify Friend or Foe (IFF) beacon. The white LEDs are perfect for general-purpose, close-work illumination;the red LEDs serve the same purpose in a low-signature. Helmet Light has O-ring sealed, watertight body. Attaches to any Integrated Communications Helmet (MICH).Helmet Light can be quickly and easily slid on and locked securely. Pressing a lever on the mount unlocks the light. Allowing for quick removal for servicing. Attaches to any MOLLE or ALICE vest. Two toggle switches and a pressure switch for total control. White and red LEDs and infrared IFF LED beacon. Easily removable for servicing or transfer to other helmets.Specifications: Condition: 100% Weight: Approx. 130g / 4.6oz Optional Color:Black, Tan Material: Nylon Plastic Bulb: LED Type: Sport Power Source: 1x CR123A Battery(not included) Functions: Momentary-On & Constant-On 3x white LEDs and 2x red LEDs for illumination.1x IR LED for signal Fit for 20mm rail Package list:1 *Tactic HelmetLight 1 * Set of Guide Rail 2 * Wrench 4 * Screw 1 * Adapter Part Battery is not included.