MAX is the maximum wattage, 25W is the power, e is the rotating screw 14 is the thread size. You'd better use this special light bulb. Of course, you can also use E 14 energy-saving light bulbs (commonly known as small screws). If there is enough room for the lamp, use a light bulb of 25W or more with caution. The key is whether the heat will bake the lamp body.