The illuminated white O2 Bar sign is shown against a gray wall but can light up any color wall or floor. Contemporary sign is battery-powered so it can be used globally A/C power plug-in adapter for use in US (110v/60Hz) Zoomed sign in for a smaller wall or floor coverage or zoom out to cover a larger surface Comes with a remote control to turn on/off Strong magnetic base affixes to most metal surfaces, eliminating the need for clamps