4-inch 9watt(100w Equivalent) 2700k 655lm Energy Star Ul-listed Dimmable LED Recessed Lighting Kit Fixture Led Retrofit Equivalent Downlight Ceiling Lamps Warm White 120v E26 Tested and approved by UL system . High safety is no doubt assured 9W Recessed LED downlight equals to traditional halogen 65W or CFL 18W lamp , Less watt less electronic cost . We are helping you reducing the electronic bill ! Energy cost only 10% of traditional halogen lamp but life term exceeds over 36000 hours , with the LED downlight it can help you save $432 electronic cost It can be easily installed within 1 minute just like cutting your steak ! But dont forget to turn off the electronic firstly Each lamp is produced strictly according to the highest electronic standard of Unites States we suggest you to install with the standard light fixture which is also standard approved