4.3 " Inch, 2x,3.5x Extra Large Handheld Magnifier by Carson

JS-24 HandHeld™ magnifier is a 4.3″ compact, easy to use 2x power magnifier for home, school or office. By Carson Optical has a crystal clear acrylic lens gives you a sharp distortion-free view. The HandHeld™ magnifier has a 3.5x power bifocal lens, which allows you to see even the finest details with ease. This magnifier is a great low vision aid and assists in reading small print. At only 4.7 oz the HandHeld™ magnifier is lightweight and comfortable to use for a long period of time Lightweight yet durable for everyday usage. 2x Magnification 

• Lens Power/ Magnification -2x,3.5x Bifocal
• Lens Diameter - 4.3 Inch
• Lens Diopter - 4 Diopter 
• Lens Focal Length  9"