| SXL7045 | Standard Specification | B1 | B2 | B3 | B4 | B5 | 
		
			| Viewing Head | Binocular head, Inclined at 45° ,360°rotatable, interpupiillary distance : 55-75mm, both of ocular tube with diopter adjustable+/-5° | √ | √ | √ | √ | √ | 
		
			| Trinocular head, Inclined at 45° ,360°rotatable, interpupiillary distance : 55-75mm, both of ocular tube with diopter adjustable+/-5° | O | O | O | O | O | 
		
			| Eyepiece | Wide Field Eyepiece WF10×/20 , with Eyepiece guard | √ | √ | √ | √ | √ | 
		
			| WF15X, WF20X | O | O | O | O | O | 
		
			| Objective | Zoom objective:0.7X-4.5X | √ | √ | √ | √ | √ | 
		
			| Auxiliary Lens | 0.5X, 1.5X, 2X | O | O | O | O | O | 
		
			| Zoom ratio | 1:6.4 | √ | √ | √ | √ | √ | 
		
			| Up & down mechanism | Pillar style | √ | √ | √ | 
 |  | 
		
			| Arm curved style | 
 | 
 | 
 | √ | √ | 
		
			| Base/working stage | Large flat base, size:320x260x16mm | 
 | 
 | √ | 
 | √ | 
		
			| Square base, Dia95mm black& white board with clips | √ | 
 | 
 | 
 |  | 
		
			| Highfoot Square base, Dia95mm frosted glass with clips | 
 | √ | 
 | √ |  | 
		
			| Working distance | 100mm | √ | √ | √ | √ | √ | 
		
			| Focus system | Coarse Adjustment | √ | √ | √ | √ | √ | 
		
			| Light source | Natural Light | √ | 
 | √
 | √
 | √ | 
		
			| Top&down haloen lamp12V/15W ,   Brightness adjustable. |  | √ |  |  |  | 
		
			| Optional Accessories | High resolution digital camera: 1.3MP, 2.0MP, 3.0MP, 5.0MP | O | O | O | O | O | 
		
			| Annular LED Light Lamp | O | O | O | O | O | 
		
			| Annular fluorescent lamp: 8W, 10W | O | O | O | O | O |