Set of 3 LED light bulbs, 12.1W, 100V, compatible with 50/60Hz. I don't know where to find the size of the base... I'm selling these because I didn't use them. I think I bought them this year. There is no box. ※The lampshade in the third photo is not included. This is a set of 3 light bulbs. Although they are new, they have been opened and stored in an opened state. I have tested all three to confirm they work and for photography. These items have been handled by a person once. Please understand this before purchasing. - Quantity: 3 - Model Name: LDG12D-G/E/K - Voltage: 100V - Power Consumption: 12.1W - Frequency: 50/60Hz Thank you for looking.