and lightweight: O wing to their compactness and light weight, they will fit in any shirt or jacket pocket.Watertight and nitrogen filled.Spectacle eyepieces afford an optimal field of view even when wearing [...] properties Prism materialBaK-4Phase-correctedYesLens coatingfull multi-coating Optical properties Magnification10 xLens diameter25 mmExit pupill2.5 mmGeometric luminosity6.3Twilight number15.8Near point2.5
and lightweight: O wing to their compactness and light weight, they will fit in any shirt or jacket pocket.Watertight and nitrogen filled.Spectacle eyepieces afford an optimal field of view even when wearing [...] properties Prism materialBaK-4Phase-correctedYesLens coatingfull multi-coating Optical properties Magnification8 xLens diameter20 mmExit pupill2.5 mmGeometric luminosity6.3Twilight number12.6Near point1.6 mField