I been using Lumadent light from Bryant Dental for 2 years now. They made it easy for me to get the right fitting for my safety glasses and was happy to answer all my questions prior to my purchase. I wouldnt want to be without my headlight now. It completely eliminates shadows in my patients mouth and give a clear white daylight look to improve my treatment as much as possible. The headlight been going daily for 2 years now without any problems and show no sign of wear on light or wire. Batteries are likewise. I can easily recommend to anyone wanting a top range headlight for a fantastic value. 10 out of 10 in my oppinion.