Bulbrite LED/SWYVEL/B Swyvel LED Desk Lamp with Dimmer and USB Charger, Black Energy saving (uses only 8-Watt) No mercury used Equivalent to a 75 watt incandescent desk lamp in light output (148 foot candles, 1600 lux) Compared to a 75W incandescent lamp, the Swivel LED desk lamp saves 295 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: 17 5/8-Inch H Base: 7 3/4-Inch Dia