Features 20x magnification Dual-head design Glasses design for hands-free use Equipped with an LED light for a clearer view Adjustable light source from left to right Eyeflap can be overturned freely General Specs Brand & Model : 9892A-2 Magnification : 20x Best Watching Distance : 1-2 cm Objective Lens Diameter : About 15 mm Eyeflap Opening : 3.5 cm Lens Diameter : 1.5 cm Battery Type : Built-in 2 x CR1620 cell
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