Modern light bulbs are confusing ... in theory, more useful than a watt measurement. The box will usually state the equivalence between watts and lumens, but as a starting point, you want around ...

Traditionally, the key factor in buying bulbs was watts: the amount of electrical power it took to run the bulb. (The higher the watts, the brighter the light.) After a century of incandescent ...

ones with 3000 K are similar to halogen bulbs. Efficiency is the comparison of the amount of light (lumens) produced by a given amount of electrical energy (watts). The more the lumens per watt ...