Very poor and unresponsive customer service. Called multiple times after my order was delayed and then the wrong part was sent despite sending pictures and multiple written descriptions. I have yet to talk to anybody on the phone after calling, always put on hold and sent to voicemail (that’s never returned). I can’t speak for the quality of the light itself as I haven’t yet had a chance to use it while I’m still waiting for pieces. The light and cord itself appears to be of adequate quality, however I was really disappointed with the small and super thin adapter “linkage arm” pieces that are made from brittle plastic and attach the light to your loupes. The other doctor I work with explained to me she has now already gone through three of these plastic little adapter pieces over the past several months and lumadent charges $30+ with shipping to send each replacement (should cost $0.10). It’s concerning such an integral piece is designed so poorly from brittle plastic instead of metal (I’m assuming to cut costs) which would immediately solve the problem. The cost is one thing, but then being without your loupes/light for the several more weeks waiting for a replacement is even more costly! I’ve attached pics of the same pieces (referred to in the review above) from a separate pair of loupes owned by a friend.