The Ingo Maurer Koyoo table lamp has an LED light source in the lamp base that illuminates a circular diffuser. This diffuser reflected the light into the room. When the Koyoo is placed on a table, the illuminated diffuser is below eye level so that the light does not dazzle. Three brightness levels can be set using a push-button dimmer on the base of the lamp. The lamp is supplied with USB-C cable and rechargeable battery. Depending on the brightness level set, wireless operation of 5, 10 or 36 hours is possible when the battery is fully charged. The circular diffuser is made of paper and has a diameter of 17.5 cm. The scope of delivery includes three diffusers made of different paper materials, which can be easily exchanged against each other.