O1 Ceiling Wall is a stylish lamp from the brand Michael Anastassiades. The lamp has a spherical bulb made of opal glass and is available in two versions, a gold-colored one made of brass and a nickel-plated one. The O1 can be used as both a wall and ceiling lamp and is minimalist in design, while being an elegant lamp that will look great in most any room in the home.

O1 is part of the Brass Architectural Collection which includes a number of wall and ceiling lamps with spherical light bowls, which are simple yet sophisticated and characterise the design.