The Earth and Moon nightlights will light up your world at night. 7-Watt bulb included. Maximum 7 Watt C7 Bulb Use a maximum 7W replacement bulb. Never use a higher wattage bulb. To replace a bulb, unplug the night light, remove the plastic cover by sliding it off. Dimensions: W-4" x H-3.3" x L-1.2"