This lip light has BOTH white and green LED lights.  You can turn them both on or just one.  The lights dim and brighten at a press of a button. POWER BUTTON...Located on front.  Main on/off, light brightness adjuster and light configuration.  Press to turn on white light, green light or both.  Hold continuously to increase or decrease the intensity of the light or lights.  Once set, it will not change even when turning light/lights on or off until button is held continuously again. Lip Toggle Switch...Located on back.  Toggle on/off when the power button has been turn on.
2 versions.  1 with battery pack and takes 2 AA batteries, and 1 without battery pack.

No Battery Pack.....It has NO wires or battery packs to attach to your helmet!  It sits just below the mic. Comes complete with instructions, assembly parts and batteries!

With..Battery pack is inserted into the battery pack pouch and can be attached to helmet.  Comes complete with instructions, battery pack pouch, assembly parts