Designed to replace any kind of bulbs, decorative LED bulbs can fit in any backing and are suitable for any use. Furthermore they are way stronger and their lifetime is also way longer than classical bulbs.
A LED bulb of 6 watts will light up as well as an incandescent bulb of 60 watts. LED bulb consumes little energy, around 10 times less than a typical incandescent bulb and between 6 and 8 times less than a halogen bulb. In order to be sure of the amount of light, you need to check the amount of lumens that the bulb generates. Light intensity is what lumen data is showing. So a 850 lumens bulb will give you the same light intensity than a standard bulb of 660 watts.