Sz Stereo Zoom Microscope

We have sz-4000 Stereo Zoom Microscope includes:
sz301101 stereo zoom binocular body,
sz302101 10x eyepieces (pair)
sz302201 eye guards (pair)
ma242101 flexible arm
ma251101 76mm e-arm
sz303201 ring adapter
specifications
zoom range of zoom body: 0.67x-4.5x
zoom ratio: 1: 6.7
magnification: 2x-270x
field of view: 1mm-109.5mm
working distance: 26mm-287mm
interpupillary adjustment: 52mm-75mm
eyetube inclination: 45° and 60° 20° rotatable microscope head
eyepiece diopter correction: ±5 diopter
working distance of built-in objective lens: 100mm
optional eyepieces: 10x, 15x, 20x, 25x and 30x
optional auxiliary lenses: 0.3x, 0.5x, 0.75x, 1.5x and 2.0x
optional video couplers: 0.5x and 1x (for trinocular body).