Topro Headband Glasses Lighted Magnifier Visor for Reading Jewelry Repair 5 Lenses

Nice item for hobbyists, collectors, electronic engineers, scientists, the old and students, lightweight and convenient to use
Designed with comfortable and easy adjustable headband
Weight: 200g
Field of View:250 ~ 350 mm (1X lens),200 ~ 300 mm (1.5X lens),175 ~ 275 mm (2.0X lens),150 ~ 250 mm (2.5X lens),80 ~ 120 mm (3.5X lens)
Power Supply: 3 x LR1130 coin batteries (included)