This classically styled On Air Light will bring a retro feel to any room and the bold warning lights are designed to get someone\'s attention before they enter the room and disturb you! There will be no doubt as to whether the light is on or off. Resembling the light often seen outside of radio, television, and recording studios this On Air Light is 30cm (11.8 inches) wide and can be powered by USB (cable included). In case you need to use the light where no power source is available and for complete portability, the light will also run off 3x AAA batteries (batteries not included). The light can be used free-standing on a desk, shelf, soundboard, etc or mounted to a wall and is supplied in a gift box.