The SIGMA desk lamp is a jewel of technology. Touch switches on the lamp body. 4 preset modes with different color temperatures and light intensities. Timer function: if activated, the lamp switches off automatically after 30 min. Soft stop function: if activated, stop by progressive dimming of the lighting over a period of 30 min. Automatic function: the light intensity is automatically adjusted according to the ambient lighting (light detector). USB output. Integrated LED module. Materials: steel / aluminium.