SINGLE BUTTON SWITCH - allows for one handed operation to cycle through all of the settings. USB-C RECHARGEABLE - The NU06 MI comes with a rechargeable built-in battery that gives up to 75 hours of runtime on a full charge. CONTENTS: Nitecore NU06 MI, USB-C Charging Cable, Magnetic Hook-and-loop Bracket, Curved Hook-and-loop Helmet Bracket, MOLLE System Bracket 4-color SIGNAL LIGHT- The NU06 MI has 4 LEDs in a compact X pattern: IR, blue, green and red. They can all be constant on, flashing on, or red and blue LED flashing. QUICK ATTACH AND DETACH - The NU06 MI on its own is ARC rail compatible yet still comes with 3 lightweight brackets: a flat magnetic bracket for metal surfaces, a curved bracket for hook-and-loop surfaces, and a four way MOLLE system bracket.