Monkeybrother Pendant Magnifying Glass with 36-Inch Silver Necklace Optical quality glass lens dia: 42mm. Silver necklace length: 36'' Unlimited uses for hobbyists, jewelers, map readers, watch repair, students. Magnification power to make letters appear 5x bigger. Very small and portable. like wearing as a Piece of Jewelry in your neck is very nice and cool. Enough chain length allows you to always keep your magnifier at hand anytime you need it. Perfect for reading fine print, phone numbers, arts & crafts projects, etc.