I’ve owned two SunBox Company’s lights for over 15 years and they are a lifesaver every winter. The company provides wonderful customer service as well. Over the years, I’ve taken my boxes to them and they’ve replaced the bulbs for me and even changed out the socket for a European outlet to cover me during extensive travel abroad. I have a larger light for home use and the Jr. for travel. Both are great. I describe using these lights like vitamins. You don’t always know if they are effective until you stop using them for a few days and then you feel their absence.