IR module similar to the genuine infrared laser. (comparison pic available in the product images). Forged 6061 aluminum housing for durability. PCB epoxy-sealed for enhanced protection. Adjustable IR illuminator for optimal performance. Ceramic paint surface finish for increased wear resistance. Guaranteed zero retention for calibers up to 5.56 NATO. Includes an LA23-style plug. IR laser beam divergence: 0.5mrad. Visible laser wavelengths: 650nm / 520nm. High: 40mW / 20mW. Visible laser beam divergence: 1mrad. IR illuminator type: VCSEL IR laser 830nm. Available colors: Flat Dark Earth. Mounting system: Picatinny mount. Power source: 3V CR123A battery Battery NOT Included! Dimensions: 3.5 in × 2 in × 1.4 in.