The product is a double binocular operation microscope designed for two men.It has excellent optical performance and it is comfo

Eyepiece Magnification: 12.5X/18B
Objective Lens: f=200 
Working Distance: 190mm
Magnification for main microscope: 4X,6X,10X,16X,25X
Magnification for assistant microscope: 6X,10X,14X  
Diameter of field:Ø58mm,Ø38mm,Ø23mm,Ø14mm,Ø9mm                                                               Adjustment of diopter:±7D                                                                      

Adjustable range for Pupil Distance: 50mm-75mm                                                          
Depth of view: 2mm~18mm       

Maximal resolution: 119LP/mm
Focus for assistant microscope:≥30mm
Illumination source:12V/100W,cold reflection halogen lamp for medical use
Illumination type:6°+0°coaxial illumination of cold light source, 26°oblique illumination(It can be used as slit illumination)Slit width is adjustable
Coaxial illumination:≥50000Lx
Oblique illumination:≥45000Lx
Reaching radius of arm: 1240mm
Adjustable vertical range:850mm~1350mm
Fine focusing speed and range:≤2mm/s, ≥50mm 
Speed for X/Y and range:≤2mm/s,50mmX50mm