| Feature:Viewing head: 45 degree inclined 360 degree rotatable binocular head; the inter-pupillary distance adjustable
 between 55-75mm.
 Diopter: adjustable of range +_5mm
 Eyepiece: wide field , high-point eyepiece , it can observe image of observation specimen with glasses.
 Objective: turret objective 2x/4x,1x/2xand 1x/3xfor option
 Working distance: 100mm, special maximum working distance can provide more working space for you.
 Illumination: Built-in and built-out illumination system .(include: halogen lamp; loop fluorescence and LED lamp.)
 Focusing: Two focusing knobs also uesd for tension adjustment , slide range 49mm
 Optical Data: 
| Objective
 | Eyepiece |  
| WF10X/20 | WF15X/15 | WF20X/10 | working distance
 |  
| magnification | view field | magnification | view field | magnification | view field |  
| 1x | 10x | 20mm | 15x | 15mm | 20x | 10mm | 100mm |  
| 2x | 20x | 10mm | 30x | 7.5mm | 40x | 5mm |  
| 3x | 30x | 7.5mm | 45x | 5mm | 60x | 3.3mm |  
| 4x | 40x | 5mm | 60x | 3.3mm | 80x | 2.5mm |  |