The Catellani & Smith U. W is a wall lamp with an adjustable lamp head. The lamp head can be rotated by 350 degrees and inclined by 90 degrees. The light is emitted glare-free onto the wall, where it creates a cone of light that can be directed as desired. The projection of the lamp is 13 cm to 23 cm depending on the inclination. The wall bracket and the lamp head are made of metal. The adjustable joint of the lamp is made of brass. The U. W from Catellani & Smith is available in black or white. An LED with a colour temperature of 2,700 Kelvin extra warm white is integrated as illuminant, which can be dimmed on site with a trailing edge phase dimmer.