Bulbrite LED/STRYDE/SV Stryde LED Desk Lamp, Silver Metal Energy saving (uses only 10 watts) and no mercury used Equivalent to a 100 watt incandescent desk lamp in light output (102 foot candles, 1100 lux) Compared to a 75W incandescent lamp, the Stryde LED desk lamp saves $511 on utility bills over the life of the lamp. (based on average of $.11/KwH) Long life, lasts up to 27 years (based on 5hrs/day usage) Size: 20.5" H x 22.75" W Base: 8.5" Dia.