Designed to give the tactical operator a source of light for administrative tasks in the field, the Princeton Tec Charge X Tactical Helmet Light delivers ample runtime along with mounting and light color options. The dimmable 100-lumen main LED is supplemented by red, blue, green, and infrared secondary LEDs. Users can also program the sequence in which these colors show. Runtime is estimated at up to 40 hours on a single AA or CR123 battery, and Princeton Tec's Flexi-Neck allows you to aim the beam right where it's needed. The mounting kit includes an elastic headband and mounts for ARC, EXFIL, M-LOK, and Picatinny rails, MOLLE and PALS webbing, and a helmet side mount.