Minimalist ceramic wall light Kera The structure of a light can hardly be reduced any further. The Kera wall lamp consists solely of a body that serves as a wall mount and is fitted with a horizontally orientated E27 socket. Kera is made of ceramic with a glossy surface. The function and appearance of the light can be determined by the choice of bulb. From a matt teardrop bulb to a decorative rustic bulb, Kera harmonises with different variants depending on taste and intended use.