Bulbrite LED/SLYNG/GY Slyng LED Desk Lamp with Touch Dimmer, Grey Energy saving (uses only 6-Watts) No mercury used Equivalent to a 40-Watt incandescent desk lamp in light output (62 foot candles, 670 lux) Compared to a 40-Watt incandescent lamp, the Swyvel LED desk lamp saves $93 on utility bills over the life of the lamp. (based on average of $.11/KwH) Long life, lasts over 13 years (based on 5hrs/day usage) Size: 25-Inch H Base: 7-Inch Dia.