Product Name: Surgical Loupe Model AENM :Series Application:Surgical Magnification :4.0X, 5.0X, 6.0X Working Distance:300-600mm Adjustable Depth Of Field: 110mm Field Of View: 80mm Weight With Frame :56g Interpupillary Range :Personalized customization Lens Material :A grade optical glass mate Combined with clip-on wireless headlamp: Yes