Shatterproof and scratch resistant. 3 inch magnifier comes with sturdy frame. Ideal for up-close viewing of fine print. This magnifier is perfect for magnifying books, newspapers, or maps. Lens is shatterproof and scratch resistant. Distortion free optical grade lens provide years of reliability. It is the most basic type of magnifying lens and are recommended for teachers & home scholars. 2X magnification 3 inch round. 4X magnification bifocal lens. Performance guarantee we guarantee all of Bazic products against defective performance due to material & workmanship. Please contact our customer service for replacement. www.bazicproducts.com. Try other great Bazic products. We offer a wide range of stationery products for all your school and office needs. Made in China.