Made in USA, Oakley  Frame 2.5 Expanded Field TTL From Rose Micro Solutions, 2.5 Expanded Field TTL Loupe Oakley Flak Frame, an american brand from rose micro solutions,Its 100% pure glass lenses and high-definition lens body design make it suitable for use in most lighting conditions, although additional lighting may be required in some other situations. Our Customized built-in TTL (Through The Lens) will be made specifically for any individual. Our 3.5 TTL Loupe offers a 3.0" Field of View and 3-4" depth of field.Light Clip Option:   If you have a light you may opt to have the light clip installed onto the frame. The light clip is shown in the pictures above. Please Note:  Although we try to get your customized loupes to you as quickly as possible, it can take 4 weeks.