Specification Brand : Generic BulletPoint1 : Wide field of view:It will be easier for you to carry out instrumental processing, the load on the eyes will decrease. BulletPoint2 : Large depth of field:It is precisely the depth of field that corresponds to the working distance, the greater it is, the greater the space is viewed through a magnifying glass. BulletPoint3 : High definition image:This product provides high definition throughout the zoom area. BulletPoint4 : Very light weight:Lightweight magnifiers, they will be convenient to use, reduce stress and other inconveniences. BulletPoint5 : Package Included: 1x glasses with binocular loupes 1x battery 1x LED head light 1x power adapter 1x screwdriver 1x glasses clip 1x wire clip 1x cleaning cloth 1x flexible headband 1x user manual Color : Black ExternallyAssignedProductIdentifier : 9444818005528 ItemName : 2.5X/3.5X Binocular Dental Loupes 320-420mm Glasses Surgical Magnifier 3W LED Dentistry Medical Headlight (2.5X-420) ItemPackageDimensions_Height : 5.01 inches ItemPackageDimensions_Length : 2 inches ItemPackageDimensions_Width : 3 inches ItemPackageQuantity : 1 ItemTypeKeyword : professional-dental-and-surgical-loupes MagnificationStrength : 3.5 multiplier_x Manufacturer : oumini Material : Metal ModelName : Magnifier2.5x3.5x ModelNumber : Magnifier2.5x3.5x NumberOfItems : 1 PartNumber : oumini2.5x3.5x ProductDescription : Magnification: 2.5X/3.5X Working Distance: 320-420 mm Depth of view: 90 mm/80 mm Field of view: 100 mm/60 mm Frame: Electroplating paint Frame Material: Brass Specifications: Magnifier Lens Material: Optical glass Power: 3W Intensity: 15000-30000 Luxv Input voltage: AC100-240V / 50-60HZ Rechargeable lithium battery, Adjustable brightness.