The Turtle Reef Lamp Base measures 7.5" wide and 7.5" deep, and is 12" tall. The shade is 4" wide at the top and 10" wide at the bottom, and is 6.5" high. The lamp base illuminates as a night light. 1st turn of the 3-way switch turns on the night light. 2nd turn turns on lamp and shuts off night light. 3rd turn lights both lamp and night light. 4th turn shuts all off. The lamp uses a 40 watt bulb maximum; the night light 7 watts. An energy efficient light bulb is included, as well as a night light bulb.