Specification Brand : Generic BulletPoint1 : Binocular loupes optical glass dental magnifying glass, high-quality lenses. BulletPoint2 : The dental loupes is with optical glass lens, which can provide clear image with high definition. You can choose 2.5X or 3.5X magnification. BulletPoint3 : The protection glasses frame is of metal material, which is light weight and strong. Metal frame is more durable than plastic frames. BulletPoint4 : Dental loupes angle and interpupillary distance are adjustable BulletPoint5 : The LED headlight with rechargeable battery provides illumination for your work. It makes your field of view bright and clear. Color : Black ItemName : 2.5X 3.5X Binocular Loupe Dental Loupes with Light 320-420mm Surgial Magnifier with Portable Headlight Headlamp (3.5X) ItemPackageDimensions_Height : 2 inches ItemPackageDimensions_Length : 3 inches ItemPackageDimensions_Width : 2 inches ItemPackageQuantity : 1 ItemTypeKeyword : professional-dental-and-surgical-loupes MagnificationStrength : 3.5 multiplier_x Manufacturer : Oumini ModelName : Loupes ModelNumber : 2.5X 3.5X Loupe NumberOfItems : 1 PartNumber : 0568964 ProductDescription : 2.5X 3.5X Binocular Loupe Dental Loupes with Light 320-420mm Surgial Magnifier with Portable Headlight Headlamp Features: 1.Wide field of view: It will be easier for you to carry out instrumental processing, the load on the eyes will decrease. 2. 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. So, you are comfortable. 3.High definition image: This product provides high definition throughout the zoom area. 4.Very light weight: Lightweight magnifiers, they will be convenient to use, reduce stress and other inconveniences. Specifications: Magnification: 2.5X/3.5X Working Distance: 320-420 mm Depth of view: 90 mm/80 mm Field of view: 100 mm/60 mm The Power of the LED Bulb: 3W Input Voltage: AC100-240V / 50-60HZ Life Time of Bulb: 10000 hours Rechargeable lithium battery, adjustable brightness.