Night Evolution Charge Mpls - Helmet Lights-Illumination Tool can attach to a MICH Helmet or any vest molle system. It has a 2 inch flexible neck that allows for easy and precise task lighting just in case it's too dark to see what you're reading. You can easily change the battery without using any tools at all. The battery used for this is 1 AA alkaline battery or a NiMh rechargeable battery. The Charge Mpls has 4 output modes: Red, green white LEDs and a IR LED.