Bulbrite Swytch LED Desk Lamp, Black Energy saving (uses only 10 watts) and no mercury used Equivalent to a 75 watt incandescent desk lamp in light output (111 foot candles, 1200 lux) Compared to a 75W incandescent lamp, the Swytch LED desk lamp saves $286 on utility bills over the life of the lamp. (based on average of $.11/KwH) Long life, lasts up to 22 years (based on 5hrs/day usage) Size: 15" H Base: 7 1/4" Dia.