Atibal Illumination Light Body Black. For constant illumination fully depress the tail cap button until it clicks. To deactivate the constant illumination fully depress the tail cap again to turn it off. For momentary illumination semi-depress the tail cap. The AI-TC tail cap also features a recessed button that prevents accidental illumination during use or in storage. The Ai-TC tail cap utilizes a gold plated spring with higher spring tension allowing for more efficient connectivity and being able to handle constant recoil. The Atibal Illumination Ai-TC Tail Cap Assembly offers simple integration with most 18650 & 18350 Light Bodies. Specifications for Atibal Illumination Ai-650 Light Body: Manufacturer: Atibal Illumination Color: Black Fabric/Material: 6061-T6 Aluminum Finish: Hardcoat Anodized Weight: 0.91 oz Package Contents: Atibal Illumination Ai-650 Light Body Atibal Illumination Ai-650: Ai-650 Light Body Black