ISO, CE & ISI Mark, NSIC Approved, WHO GMP
Feature:
* Coaxial parallel light principle.
* 5 different apertures.
* 19 kinds of adjustable corrective lenses, range of lenses: -20d~+20d.
* 4000k color temperature LED bulb and XHL Xenon Halogen bulb to optional.
* The clip with integrated on/off switch.
* Standard handle, handy and convenient.
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