Is highly practical, the LED headlights have high brightness. Concentrated spotlight, brightness can be adjusted, advanced. Which makes the image can be seen clearly, and the lens adopts fixed angle. The distance adjustment operation can be completed in one step. Ø1-9mm(at 420mm of distance).The Medical surgical headlight with loupe. This products can be used in: dentistry, surgery, cosmetic surgery, orthopedics, pet examination, root canal irrigation, general examination, male, gynecology, and other examinations. The sale of this item may be subject to regulation by the U. State and local regulatory agencies. If the item is subject to FDA. I will verify your status as an authorized purchaser of this item before. If you have questions about legal obligations regarding sales of medical. You should consult with the FDA's Center for Devices and Radiological. Thank you for your cooperation. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical, Lab & Dental Supplies\Dental Face Shields, Head Lights & Loupes". The seller is "ausdefu2019" and is located in this country: US. This item can be shipped to United States.