3 1/2/ in diameter. Brand new. Bulb Included. Both lights for the price of one. ANY questions, please send me a message... no such thing as silly questions :-) I have many other items including more Toy Story, Monsters Inc, Frozen, and other Disney listings - Please visit my store.I am an ebay member for 20 years with 100% feedback. I am here to make sure you are satisfied with your purchase. Please let me know if you are ever unhappy with any purchase. I usually can ship within 24 hours but never more than 48 hours. I do combine shipping. Visit my store :-)