Black 3.5X 420Mm Optical Glass Surgical Binocular Loupes Glasses Lens Magnifier Cone (Black)

It is suitable for all kinds of operation Using the rechargeable lithium battery,light weight,longevity and the more comfortable carry Longevity and the more comfortable carry, Working distance: 420mm Depth of field: 80mm Notices:This item just a loupes ,no headlight