The Knapstein GISA table lamp has an opal, matt white glass, through which the light is emitted diffusely and glare-free in all directions. The cylindrical glass has a diameter of 11 cm and a height of 10 cm. The lamp is available in the surfaces brass matt, nickel matt and nickel-chrome matt. An on/off switch is integrated on the supply line. The GISA has a height of 33 cm. A replaceable LED retrofit bulb is supplied for its G9 socket.