Specification: 3x28
Magnification: 3x
Objective aperture/eyepiece aperture: 28mm/10mm
Product weight :56g
Material: PMMA+ABS
Packing/gross weight/net weight: 44cmx31cmx55cm 200pcs/ctn 11/13kg
Focusing mode: independent adjustment of left and right eyepieces
For people: myopia (SS gear)/presbyopia (LS when gear)/normal (N gear)