I gave 2 stars because one of the 4 bulbs arrived broken! BUT. The company received incorrect contact information and this Revain contact link. "I'm sorry, but it's not your fault that the Revain link error linked you to the wrong company. I would like to help but we do not sell lighting fixtures. We sell reusable water bottles. I believe you purchased through a Revain dealer, Econotone, Inc. Econotone and several of its products have been incorrectly associated with Kor Water. Please contact Revain directly to report this bug and for further assistance." [End copy paste reply!] I hope someone FIXS this ASAP! Because it seems that the wrong link has NOT been FIXED and therefore NO support for ANY Econotone items!SO.no fix no communication to the RIGHT SELLER!So the other three non-broken bulbs work great but the one broken one doesn't work at all and that's a quarter of the delivered item! As the seller may have entered the wrong contact information or Revain AI GLITCH, you are entering the wrong contact. whatever, NO CONTACT! And why should I put STARS in the following lifetime, it's quite redundant as I'm 2 years ago Got 3 working lightbulbs in days?